The stated statement states that 398 mg of Krypton contains 4.75 x 10-3 moles of Kr.
What it is in chemistry is KR?Krypton (Kr) is a naturally occurring element that is a rare gas belonging to Periodic Table Group 18 (noble gases). It only forms a small number of chemical compounds. Krypton is monoatomic, tasteless, colorless, and about 3.5 times heavier than air.
KR is a metal, right?Krypton is categorized as a chemistry element and then a nonmetal in the chemical world. William Gordon and his helper Morris Travers found it in 1898.
The molar mass of Kr is 83.80 g/mol.
So, moles = 398 mg / 1000 mg/g / 83.80 g/mol = 4.75 x [tex]10^{-3}[/tex] moles Kr
So, the answer is a. 4.75 x [tex]10^{-3}[/tex] moles Kr.
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if chlorine and sodium (iv fluids) dissolve in saline water what mixture does that make saline
If chlorine and sodium (iv liquid) dissolve in brine, the mixture that makes the saline water is an acid and a base solution.
What is sodium?Sodium is an alkali metal, in group 1 of the periodic table, because it has one electron in its outer shell which it easily donates, creating a positively charged atom—the Na+ cation.
Sodium atoms (Na) will bond with other elements such as chlorine (Cl) to form NaCl compounds or what we call table salt. Acid and base solutions are mixtures of chlorine and sodium (liquid IV) which are soluble in water.
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water consists of one oxygen atom joined to two hydrogen atoms by what type of bonds?
Answer:
Explanation:
Water consists of one oxygen atom joined to two hydrogen atoms by covalent bonds. In a covalent bond, atoms share electrons to form a stable bond. In the case of water, each hydrogen atom shares one electron with the oxygen atom, forming two covalent bonds between the oxygen and hydrogen atoms.
These covalent bonds are polarized, with the oxygen atom having a partial negative charge and the hydrogen atoms having partial positive charges. This polarization contributes to the properties of water, such as its high surface tension and its ability to dissolve ionic and polar substances.
In conclusion, water consists of one oxygen atom joined to two hydrogen atoms by covalent bonds.
at 20.0 oc the vapor pressure of benzene (c6h6) is 75.0 torr and that of toluene (c7h8) is 22.0 torr. assume that benzene and toluene form an ideal solution. what is the total vapor pressure (in torr) above a solution made by mixing 0.238 moles of c6h6 and 0.712 moles of c7h8? (mol. wts. c6h6
The total vapor pressure of the solution would be approximately 50.25 torr.
The total vapor pressure of the solution can be calculated using the mole fraction of each component in the solution. The mole fraction of benzene (C₆H₆) can be calculated as follows:
mole fraction of C₆H₆ = moles of C₆H₆ / (moles of C₆H₆ + moles of C₇H₈)
mole fraction of C₆H₆ = 0.238 moles / (0.238 moles + 0.712 moles)
mole fraction of C₆H₆ = 0.250
And the mole fraction of toluene ( C₇H₈) can be calculated as:
mole fraction of C₇H₈ = moles of C₇H₈ / (moles of C₆H₆ + moles of C₇H₈)
mole fraction of C₇H₈ = 0.712 moles / (0.238 moles + 0.712 moles)
mole fraction of C₇H₈ = 0.750
The total vapor pressure of the solution can then be calculated as the sum of the vapor pressures of the individual components, each multiplied by its mole fraction:
total vapor pressure = mole fraction of C₆H₆ × vapor pressure of C₆H₆ + mole fraction of C₇H₈ x vapor pressure of C₇H₈
total vapor pressure = 0.250 × 75.0 torr + 0.750 × 22.0 torr
total vapor pressure = 33.75 torr + 16.5 torr
total vapor pressure = 50.25 torr
So the total vapor pressure of the solution would be approximately 50.25 torr.
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what are the requirements for an enzyme to function efficiently?
For an enzyme to work effectively, the right temperature, pH, substrate concentration, cofactors, specificity, and structure are required.
What are enzymes?A biological molecule known as an enzyme serves as a catalyst, accelerating chemical reactions in cells.
There are various conditions that an enzyme needs to work properly, including:
Enzymes have a preferred temperature range and pH range where they function most effectively. Deviations from this optimal range can have an impact on the enzyme's structure and function.
Concentration of the substrate: Enzymes work best when they have enough of the molecule they act on, or substrate, to bind to. If there is too much substrate present, the enzyme may become saturated and unable to work any faster.
Cofactors' presence: Some enzymes need cofactors, like metal ions or vitamins, to work properly.
Enzyme specificity: The active site, or structure and chemical environment of an enzyme, permits it to bind to a particular substrate.
Correct enzyme structure: In order for an enzyme to work properly, its shape and structural integrity must be preserved.
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why level the meniscus inside the eudiometer with the meniscus of the water in the graduated cylinder
Water molecules are attracted to the molecules in the wall of the glass beaker. And since water molecules like to stick together, when the molecules touching the glass cling to it, other water molecules cling to the molecules touching the glass, forming the meniscus.
About water moleculeEvery molecule has a shape. Some are shaped like the letter V, and some are trigonal. The shape of a molecule can be determined by the Valance Shell Electron Pair Repulsion Theory (VSEPR).
VSEPR theory is a theory that can describe the shape of electrons in three dimensions according to the repulsion of pairs of valence electrons and also free electrons.
This repulsion produces angles between the electrons that make up the molecule. VSEPR theory relies on the Lewis structure as the basis for determining lone and bond pairs. The repulsion of free electrons is greater than the repulsion between free electrons and bound electrons.
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in a 60.0-g aqueous solution of methanol, ch4o, the mole fraction of methanol is 0.140. what is the mass of each component?
Let "x g" of methanol and "y g" of water be there in the given solution. Thus - (x + y) g = 60.0 g . We need to find the mass of each component.
Since, there are 0.140 moles of methanol is there total 1 mol of aq. solution.
Number of moles of water = 1 - 0.140 = 0.86 moles
Thus - for 1 mol of total solution - 60.0 mol (0.140*32 g = 4.48 g) methanol and 0.86 mol (0.86 mol*18 g/mol = 15.48 g) water present.
Therefore, total mass for 1 mol = 4.48 g + 15.48 g = 19.96 g
Mass fraction of methanol = 4.48 g /19.96 g = 24.44
Mass fraction of water = 15.48g /19.96 g = 0.775
Thus -
Mass of methanol that can be present in the solution = (24.44)(0.775g) = 18.94 g
Mass of water that can be present in solution = (0.775)(60.0 g) = 46.5
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CH3 -CH=CHC-CHCH3 The wittig reaction can be used for the synthesis of conjugated dienes. propose a combination of wittig reagent and aldehyde/ketone that can be used to synthesize the double bond labeled b in this structure.
By combining a Wittig reagent and an aldehyde or ketone, the conjugated diene in CH3-CH=CH-C-CHCH3 can be synthesised using the Wittig reaction.
What is wittig reagent?Georg Wittig is the name of the creator of the Wittig reagent, a type of chemical reagent used in organic chemistry. It typically consists of a phosphonium salt with two alkyl or aryl groups attached and a positively charged phosphorus atom.
The double bond is created when the Wittig reagent, usually a ylide, interacts with the aldehyde or ketone to create an alkene. Pent-2-enal is an illustration of an appropriate aldehyde or ketone for this reaction. The process of the reaction involves the ylide deprotonating the aldehyde or ketone to create an intermediate carbanion, which then combines with the phosphorus atom of the ylide to create an alkene. The position of the initial carbonyl group in the starting material is matched by the double bond in the finished product.
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arbon-14 has a half-life of 5720 years and this is a first-order reaction. if a piece of wood has converted 11.5% of the carbon-14, then how old is it?
Carbon-14 has a half-life of 5720 years and this is a first-order reaction. if a piece of wood has converted 11.5% of the carbon-14, then is it 1008 years old
Half-life - 5720 years
The amount of time needed for the reactant concentration to drop to half its initial value is known as a reaction's half-life. A constant connection to the reaction's rate constant is the half-life of a first-order reaction: t1/2 = 0.693/k
The rate constant, k = 0.00012 year⁻¹
11.5 % is decomposed which means that 0.115 of is decomposed. So
At/Ao = 0.885
0.885=e^-0.00012*t
T= 1008 years
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Which chemical formula shows an ionic compound? Responses N2O upper case N subscript 2 end subscript upper case O NaCl upper case N lower case a upper case C lower case l CO2 upper case C O subscript 2 C6H12O6 upper case C subscript 6 end subscript upper case H subscript 12 end subscript upper case O subscript 6 end subscript
Answer:
Explanation:
NaCl (Sodium Chloride) shows an ionic compound.
Answer:
it N2 + 3H2 2Nh
Explanation:
i just took quiz it k12
If we decrease the temperature to 200 K at constant pressure, what would the new volume be? a. 10 L
b. 13.3 L
c. 6.67 L
d. 5 L
The new volume when the temperature decreases are 6.67 L. Answer C.
The complete question is in the attachment. According to Charles's law, at constant pressure, the temperature and the volume have a fixed ratio.
When the temperature increases, the volume also increases.When the temperature decreases, the volume also decreases.V₁ ÷ T₁ = V₂ ÷ T₂
V₁ = initial volumeV₁ ÷ T₁ = V₂ ÷ T₂
10 ÷ 300 = V₂ ÷ 200
V₂ × 300 = 10 × 200
V₂ = 2,000 ÷ 300
V₂ = 6.67 L
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enzymes are catalysts that increase the rate of reactions by
By lowering the activation energy and consequently raising the rate of reaction, enzyme (and other catalysts) work.
What exactly is indeed a catalyst and why does it quicken reactions?A catalysts is a chemical that may be included in a reaction to speed up the process without being consumed. Catalysts often reduce a process's activation energy or change its mechanism. Enzymes are proteins that act as enzymes in biological systems.
What kind of processes do enzymes catalyze?By reducing the activation energy required for a process to occur, enzymes catalyze reactions. The material with which an enzyme interacts is known as a substrate. In a protease action, the substrate's molecular structure is changed, as well as a product is produced.
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when co(g) reacts with cl2(g) to form cocl2(g) , 108 kj of energy are evolved for each mole of co(g) that reacts.write a balanced thermochemical equation for the reaction with an energy term in kj as part of the equation. note that the answer box for the energy term is case sensitive.
The balanced chemical equation for the reaction of CO(g) and Cl2(g) to form COCl2(g) is:
CO(g) + Cl2(g) -> COCl2(g)
The thermochemical equation, including the energy term, is:
CO(g) + Cl2(g) -> COCl2(g) + 108 kJ/mol
What is a Balanced Equation?A chemical equation that is balanced has equal amounts of each element's atoms on both sides of the equation and conserves mass.
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322 l of hydrogen occupies a volume of 197 l at stp. if the initial temperature of the hydrogen was 27° c, what was its initial pressure?
The Boyles law formula, P1V1=P2V2, is used to determine the initial pressure placed on the hydrogen constant.
P1=? V1= 322 L
V2= 197
L P2 = at
STP = 760 mm hg
P1 is consequently equal to 760 mmhg times 197 L/ 322 L, or 464.97 mmhg.
Where can you find hydrogen?The majority of stars and the sun include it, and the giant Jupiter is primarily made of it. Far more hydrogen on Earth is located in water.Below responsible for the ongoing per thousand by volume is all that is found in it as an in the air.
Which nation uses hydrogen as fuel?Per nation, worldwide hydrogen fueling stations in 2022. The world's largest nation in in terms of the number of hydrogen refueling stations is China.
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You mix 1 mole of hno3 with 1 mole of naoh in enough water to make 1 l of solution. what do you expect the final ph of the solution to be?
HNO3 is nitric acid and NaOH is sodium hydroxide. HNO3 and NaOH will react to form sodium nitrate (NaNO3) and water. pH of the solution depend with the concentration of H+ ions present.
HNO3 + NaOH ⇒ NaNO3 + H2O
The reaction is exothermic and that means by progressing the reaction it will release heat and this heat will help increase the solubility of ions in the solution.
The pH of the solution depends upon the concentration oh H+ and OH- ions. if the pH is 7.0 the solution will be neutral, if the pH is below 7.0 it is acidic and above 7.0 it is alkaline.
If the solution is neutral, the concentration of H+ ions will be equal to the concentration of OH- ions.
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which class of material is generally associated with the highest density values at room temperature? why?
Metals are generally associated with the highest density values at room temperature.
Density is the substance's mass in line with a unit of quantity. The image most usually used for density is ρ, despite the fact that the Latin letter D can also be used. Mathematically, density is described as mass divided by way of quantity: {displaystyle rho ={frac {m}{V}}} where ρ is the density, m is the mass, and V is the extent.
Density is the number of things—which could be people, animals, plant life, or objects—in a positive region. To calculate density, you divide the range of gadgets by the size of the region. The populace density of a country is the range of humans in that country divided by the place in square kilometers or miles. The mass of an item contained consistent with unit extent is referred to as density. The SI unit of density is kilogram in keeping with cubic meter (kg/m3).
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if an unknown compound has a moderately intense, wide peak in the 3200-3400 cm -1 region, what funcitonal group is likely present?
A moderately intense, wide peak in the 3200-3400 cm⁻¹ region is indicative of the presence of hydroxyl (-OH) functional groups.
Identification of Hydroxyl Functional Groups Using Infrared SpectroscopyInfrared spectroscopy is a powerful tool in the identification of functional groups in unknown compounds. One specific region of the infrared spectrum that can provide valuable information is the 3200-3400 cm⁻¹ region. If an unknown compound displays a moderately intense, wide peak in this region, it is highly likely that it contains a hydroxyl (-OH) functional group. This is because the stretching vibration of the -OH bond falls in the range of 3200-3400 cm⁻¹ and the hydroxyl group is characterized by a broad, intense peak due to the high density of vibrational modes. The presence of hydroxyl groups can be further confirmed by looking for other characteristic peaks in the IR spectrum, such as a broad peak in the 1600-1700 cm⁻¹ region for the bending vibrations of the -OH bond. Overall, infrared spectroscopy can be an effective method for identifying hydroxyl functional groups in unknown compounds.
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if you were to repeat this lab at a very high elevation in the mountains, what effect would this change have on volume of the gas in the eudiometer per the ideal gas law (increase or decrease)? explain why this would happen in terms of the behavior of gas molecules and their interaction with the surface of water.
At a very high elevation in the mountains, the volume of the gas in the eudiometer would decrease according to the ideal gas law.
This is because the atmospheric pressure would be lower at higher elevations, resulting in less pressure on the gas molecules. Since gas molecules behave in a way that increases their entropy (i.e. they move around, expand, and become less dense), they will have less pressure to push against the surface of the water, thus decreasing the volume of the gas in the eudiometer. The temperature, pressure, volume, and number of gas molecules all affect how they behave. When the temperature is held constant, pressure decreases as volume increases and vice versa.
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what is the percent by mass of cdso4 in a 1.0 molal aqueous solution?
19.8% percent CdSO4 by mass is contained within the solution.
Is water all that's in an aqueous solution?Aqueous solutions are made up of water and one or much more dissolved materials. Solids, gases, and other liquids can all dissolve in an aqueous solution. A combination needs to be stable in following are considered a real solution.
By dividing the amount of both the solute but by mass of the fluid and multiplying by 100, one may get the weight percent of a solute in such an aqueous solution. CdSO4 has a mass of 247.8 g in such a 1.0 molal solution, or 1.0 mol x 247.8 g/mol. CdSO4 is therefore present in the solution at a mass-percentage of 247.8 g / (247.8 g + 1000 g) x 100% = 19.8%.
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You mix 2 moles of hbr with 3 moles of koh in enough water to make 1 l of solution. how much kbr do you expect to make?
If we mixed 3 moles of HBr with 2 moles of KOH in enough water to make 1 liter of solution, then the amount of KBr that would be formed would be 3 moles.
The balanced chemical equation for the reaction between HBr and KOH is:
HBr + KOH → KBr + H2O
In the given case, we have 3 moles of HBr and 2 moles of KOH
Their mole ratio = 1.5:1.
This means that for every 1.5 moles of HBr, we have 1 mole of KOH, which will be enough to react with all the HBr.
So, the amount of KBr formed would be 3 moles, which is the same as the amount of HBr that was added to the reaction.
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if the reaction vessel initially contained only dinitrogen tetroxide, would you expect an overall increase or decrease in pressure as the reaction proceeds? justify your reasoning
If the reaction vessel initially contained only dinitrogen tetroxide, the overall increase in pressure occurs as the reaction proceeds.
The phrase "rate of response" refers to how quickly or slowly a reaction might occur, thus we would need to rapidly remind ourselves of this. We are aware that if a reaction happens quickly, we will claim that it happened quickly, and vice versa.
Let's keep in mind that in this situation, the relationship between the gas's volume and pressure is inverse. As a result, the volume of the gas would decrease as the pressure did. On the right side, there are two volumes, while on the left, there is one volume.
When there are two moles of gas on the right side and the gas pressure increases as we walk from left to right, it is what we would anticipate.
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of an unknown protein are dissolved in enough solvent to make of solution. the osmotic pressure of this solution is measured to be at . calculate the molar mass of the protein. round your answer to significant digits.
The molar mass of the protein is 6.65 × 10³ g/mol.
The pressure that must be applied to the solution side to stop fluid movement when a semipermeable membrane separates a solution from pure water is defined as the osmotic pressure.
As we know the formula for osmotic pressure is given by,
P = CRT
⇒ C = P / RT
⇒ C = 0.117 atm / (0.0821 × 298)
⇒ C = 0.00478
Also,
Concentration (C) = Moles/Volume
⇒ C = (Mass/Molar mass) / Volume
⇒ C = (159 × 10⁻³/M) / 5 mL/1000
⇒ 0.00478 = (159 × 10⁻³/M) / 5 mL/1000
⇒ M = 6.65 × 10³ g/mol
The given question is incomplete and the complete question is given below,
159.00 mg of an unknown protein are dissolved in enough solvent to make 5.00 mL of solution. The osmotic pressure of this solution is measured to be 0.117 atm at 25.0 °C. Calculate the molar mass of the protein, R=0.0821 L.at m/K. Be sure your answer has the correct number of significant digits.
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assuming all the salts below are the same concentration, which salt would lower the freezing point of water the most? group of answer choices a, k2so4 b, nh4no3 c, kbr d, na3po4
The correct answer is option c. Potassium chloride (KBr) would lower the freezing point of water the most.
KBr would lower the freezing point of water the most because as it has the highest molality, or the concentration of solute particles, present in solution. When a solute is added to a solvent, like water, it interferes with the formation of ice crystals, which lowers the freezing point of the solution.
Freezing point is defined as the temperature at which a liquid becomes a solid. As with the melting point, increased pressure generally raises the freezing point. The freezing point is mainly lower than the melting point in the case of mixtures and for the certain organic compounds such as fats.
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a solution is prepared by dissolving 1.34 g ethanol (c2h5oh) in 19.3 g water. what is the molality (mol/kg) of c2h5oh in the solution? group of answer choices 1.41 m 3198.504 m 0.0694 m 0.00151 m 1.51 m
The molality (mol/kg) of a solution of ethanol (C2H5OH) is 1.5m if it is prepared by dissolving 1.34 g of ethanol in 19.3 g of water.
Determination of the molality (mol/kg) of C2H5OH in the solutionTo determine the molality of the ethanol solution, one must use the molecular weight of ethanol, the definition of molality, and the rule of three.
Since the molality of a solution is the number of moles of solute dissolved in one kilogram of solvent, first calculate the number of moles of ethanol in a mass of 1.34 g of the substance and then the ratio of moles that would be in a kilogram of water
In summary, basically two calculations are performed:
Calculation of the number of moles of ethanol dissolvedProjection of the number of moles of ethanol dissolved in a kilo of water.According to the molecular weight of ethanol, if there are 46 g in one mole of this substance, then 1.34 g of ethanol is equivalent to X moles:
X = 1.34g x 1mol / 46g
X = 0.029 mole
In this sense, if there are 0.029 moles of ethanol in 19.3 g of water, maintaining proportionality, the number of moles of ethanol that would be in one kilo, that is, 1000 g of water, would be X moles:
X moles = 1000g x 0.029 moles / 19.3g = 1.5 moles
Therefore, the molality of the indicated ethanol solution is 1.5m
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which of these atoms has the largest number of neutrons in the nucleus?
The most neutrons are found in the nuclei of gadolinium and holonium.
Why do atoms have names?Because it was formerly believed that molecules were the tiniest objects in the world and therefore could not be separated, the word "atom" is derived form the Greek word meaning "indivisible."
66 protons make up dysprosium.
67 protons make up holonium.
The protons in neodymium are 60.
the 63 protons in europium
64 protons make up gadolinium.
Next, mass number minus proton number equals the amount of neutrons.
157 - 66 = 91 neutron for dysprosium
162 - 67 = 95 neutron for holonium
Neutrons for neodymium are 149 - 60 = 89.
148 - 63 = 85 neutrons for Europium
Gadolinium has neutrons of 159 - 64 = 95.
Holonium and gadolinium have the most neutrons in their nuclei as a result.
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The complete Question :
Which of these atoms has the largest number of neutrons in the nucleus?
Check all that apply.
157Dy
162Ho
149Nd
148Eu
159Gd
you titrate a 200 ml hbr solution with 0.5 m koh. if it takes 150 ml of koh to reach the equivalence point, what was the concentration of the original acid solution?a. 0.72Mb. 0.38Mc. 0.46Md. 0.67M
The actual acid solution's concentration will be 0.38M based on the assertion made.
What are the uses of HBr?In practical syntheses, hydrobromic acid (HBr) was employed as a reservoir of bromine. It is a potent acid that is used in aqueous solutions to prepare catalysts for the synthesis of PTA and PETs, electrolytes for energy storage, and hydrobromination agents in a number of organic process for Pharma and Agro applications.
moles = (0.5 M) * (150 ml / 1000 ml/L) = 0.075 moles
Since the reaction is 1:1 (1 mole of KOH reacts with 1 mole of HBr), the number of moles of HBr in the original solution is 0.075 moles.
The concentration of the original HBr solution can be calculated as follows:
C = moles / volume
C = 0.075 moles / (200 ml / 1000 ml/L)
C = 0.38 M
So, the answer is 0.38 M (Option B).
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explian why a red object appears to a human eye
Answer:
All light except red is absorbed by the object.
why are the atoms in a silicon crystal arranged in such a way that each silicon atom has four nearest neighbors ?
It is possible for pure silicon to be arranged in a mono crystaline structure. That is, all of the silicon atoms align in a very specific, well-ordered manner, without any voids or breaks in the pattern. As silicon has only four electrons in its valence shell, four more electrons would be needed to fill the shell. In the crystal, any given atom of silicon effectively “shares” an electron from its four closest neighbors through a covalent bond (meaning “with or among the valence”). Each atom does this, therefore each atom is tightly bound to its neighbors.
Water in an ice cube tray is put into the freezer section of a refrigerator. As it freezes, this water —
loses all entropy or decreases in entropy?
The supplied assertion states that this water loses entropy as it freezes.
What is an easy way to define entropy?The amount of energy per unit of temperatures in a system that cannot be used to carry out beneficial work is known as entropy. Entropy is a function of a system's molecular disorder or unpredictability since work is produced by organized molecular motion.
Which model best explains entropy?Entropy can be thought of as a rough indicator of the quality of energy, with lower entropy indicating higher quality. Less entropy energy is stored in an organized manner (the efficient library). The spontaneous library stores energy in a chaotic manner, which has a high entropy.
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DESCRIBE SUB ATOMIC PARTICLES
Answer:
Subatomic particles are particles that are smaller than atoms. They are the building blocks of atoms and are made up of three main particles: protons, neutrons, and electrons. Protons are positively charged particles, neutrons are neutral particles, and electrons are negatively charged particles. There are also other subatomic particles such as quarks, muons, and gluons. Each of these particles has different properties and can be found inside atoms.
Answer:
Sub-Atomic Particle is a particle - Which is smaller than an atom in size.
Explanation:
Where are Sub-Atomic particles found?
They are found in the following
Protons - inside the nucleus.
Neutrons - inside the nucleus.
Electrons - outside the nucleus.
What are roles for the Sub Atomic Particles?
Subatomic particles play two roles in the structure of matter. They are both the basic building blocks of the universe and the mortar that binds the blocks.
So, Hence the solution to this problem is a Sub-Atomic particle - Is a particle which is smaller than a atom in size
which of the following examples illustrates a number that is correctly rounded to three significant figures? 4.05438 grams to 4.054 grams 109 526 grams to 109 500 grams 0.03954 grams to 0.040 grams 20.0332 grams to 20.0 grams 103.692 grams to 103.7 grams
The number that is correctly rounded to three significant figures is 0.03954 grams to 0.040 grams.
The first step in rounding to significant figures is to determine how many significant figures the original number has. In this case, 0.03954 grams has 5 significant figures.
To round to 3 significant figures, you must look at the 4th digit (5). If this digit is 5 or greater, the 3rd digit is rounded up (0.040 grams). If this digit is less than 5. the 3rd digit is left unchanged (0.039 grams).
The final answer of 0.03954 grams rounded to 3 significant figures is 0.040 grams.
water is polar due to its bent structure and an unequal sharing of electrons. water is nonpolar due to its linear structure and unequal sharing of electrons. the slightly negative oxygen atom of one water molecule is attracted to the slightly positive hydrogen atom of another water molecule.
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