According to postulates of the Dalton's atomic theory, atoms of same element are identical in all respects i.e., in shape, size, mass and chemical properties. However, after the discovery of isotopes, it was modified as : atoms of same element may not be similar in all respects
Which of the following would you expect to form a molecular compound?
Potassium and nitrogen
Sodium and bromine
Hydrogen and sulfur
Iron and oxygen
Answer:
Iron and oxygen
Potassium and nitrogen
why do we have to multiply the atomic mass of the oxygen to get 32?
A Patient with family history of a hematologic condition is being seen by a nurse. What assessment funding needs additional assessment for the condition.
Nursing needs assessments involve gathering subjective and factual information, including the patient's psychosocial history, family history, surgery history, medical history, and medication history.
Introduction Hematologic diseases, sometimes known as blood disorders or disorders of the blood-forming organs, affect millions of Americans. Hematologic diseases, in addition to blood cell tumors, also include rare genetic disorders, HIV-related ailments, sickle cell disease, anemia, and side effects from chemotherapy or blood transfusions.
In hematologic disorders, the genetic condition is passed from parents to their offspring.
Hemoglobin can be aberrant in numerous ways.
a condition like sickle cell anemia, thalassemia.
Certain blood disorders are brought on by a decrease in red blood cell formation.
• Nursing needs assessments involve gathering subjective and factual information, including the patient's psychosocial history, family history, surgery history, medical history, and medication history.
• The patient's family should also be checked for similar disease patients, and accurate disease-related data must be gathered.
• From time to time, thoroughly review all of the patient's reports. Which the patient reported early.
Using clinical judgment, do an analysis or diagnosis to determine the patient's condition and identify the primary causes.
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Ethyl alcohol, also known as ethanol, has a density of 0.79 g/mL. What is the volume, in quarts, of 1.95 kg of this alcohol?
Express your answer using two significant figures.
Taking into account the definition of density, the volume of 1.95 kg of alcohol is 2.6083 quarts.
Definition of densityDensity is a quantity that allows us to measure the amount of mass in a certain volume of a substance.
The expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:
density= mass÷ volume
It can be deduced that density is inversely proportional to volume: the smaller the volume occupied by a given mass, the higher the density.
Volume in this caseIn this case, you know that:
Density= 0.79 g/mLMass= 1.95 kg= 1950 gReplacing in the definition of density:
0.79 g/mL= 1950 g÷ volume
Solving:
0.79 g/mL ×volume= 1950 g
volume= 1950 g÷ 0.79 g/mL
volume= 2468.35 mL= 2.6083 quarts (being 1 mL= 0.00105669 quarts)
In summary, the volume of 1.95 kg of alcohol is 2.6083 quarts.
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Upon being diagnosed with Cirrhosis of the liver, doctors urge patients to limit the amount of salt intake in their diet to help decrease the rate of scarring. During salt intake the blood becomes increasingly (hypertonic, hypotonic) to the interstitial fluid. Due to this osmotic imbalance, the liver cells become (hypertonic, hypotonic) to the interstitial fluid. This causes the liver cells to appear (shriveled, swollen).
Upon being diagnosed with cirrhosis of the liver, doctors urge patients to limit the amount of salt intake in their diet to help decrease the rate of scarring. During salt intake the blood becomes increasingly hypertonic to the interstitial fluid. Due to this osmotic imbalance, the liver cells become hypotonic to the interstitial fluid. This causes the liver cells to appear swollen.
What is cirrhosis?Cirrhosis is a liver injury that is generated by various causes in which the liver begins to form fibrous because scars are generated in it. The lesions occur for different reasons, such as excessive alcohol consumption, and the liver will try to heal itself by forming scars, but as this happens, the cirrhosis worsens and can be fatal.
Therefore, we can confirm that upon being diagnosed with cirrhosis of the liver, doctors urge patients to limit the amount of salt intake in their diet to help decrease the rate of scarring. During salt intake the blood becomes increasingly hypertonic to the interstitial fluid. Due to this osmotic imbalance, the liver cells become hypotonic to the interstitial fluid. This causes the liver cells to appear swollen.
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How many atoms of hydrogen are in 3 moles of ammonia, NH3?
Answer:
[tex]5.4198[/tex] × [tex]10^{24}[/tex] atoms of hydrogen
Explanation:
Firstly, we need to know how many atoms of [tex]NH_{3}[/tex] are there in 3 moles of [tex]NH_{3}[/tex].
We know that there is [tex]6.022[/tex] × [tex]10^{23}[/tex] atoms in a mole of any substance.
[tex]6.022[/tex] × [tex]10^{23}[/tex] is Avogadro's Constant
[tex]6.022[/tex] × [tex]10^{23}[/tex] × 3 = [tex]1.8066[/tex] × [tex]10^{24}[/tex]
Therefore in 3 moles of ammonia, there are [tex]1.8066[/tex] × [tex]10^{24}[/tex] atoms.
Next, you should determine how many molecules of an element is present in ammonia.
There is 1 Nitrogen molecule and 3 Hydrogen molecules for every mole of ammonia.
Finally, since we know 3 moles of ammonia contains [tex]1.8066[/tex] × [tex]10^{24}[/tex] atoms, we just have to multiply accordingly to get the individual amount of atoms of an element a compound has.
For Nitrogen :
1 × [tex]1.8066[/tex] × [tex]10^{24}[/tex] = [tex]1.8066[/tex] × [tex]10^{24}[/tex] atoms of nitrogen
For Hydrogen :
3 × [tex]1.8066[/tex] × [tex]10^{24}[/tex] = [tex]5.4198[/tex] × [tex]10^{24}[/tex] atoms of hydrogen
Therefore, there is [tex]5.4198[/tex] × [tex]10^{24}[/tex] hydrogen atoms in 3 moles of ammonia.
Hope this answer helped!what is the molar mass for CaWO4
Answer:
Calcium tungstate
287.93 g/mol
A light wave has a frequency of 5 x 1014 Hz and a speed of 3 × 10 m/s. Use
the wavelength equation to calculate the wavelength.
A light wave which has a frequency of 5 x 1014 Hz and a speed of 3 × 10 m/s has wavelength is 0.6 × 10^-6.
Wavelength is defined as the separation between two identical points (adjacent crests) in adjacent cycles as the signal travels through space or along a wire.The number of cycles or vibrations that a body in periodic motion experiences during one unit of time, as well as the number of waves that pass a fixed point in a unit of time is called Frequency. Frequency is expressed in Hertz (Hz).Speed of light, the rate at which light waves move through various substances. Specifically, the speed of light in a vacuum is presently calculated to be 3 × 10⁸ m/s.Frequency of light wave = ν = 5 × 10¹⁴ Hz
Speed of light c = 3 × 10⁸ m/s
we have to find out wavelength λ of light wave
We know that,
c = λ × ν
λ = c / ν
= 3 × 10⁸ / 5 × 10¹⁴
0.6 × 10^-6
Therefore, wavelength of light wave is
0.6 × 10^-6
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How can some fish change their
depth in the water column?
Answer:
skill
Explanation:
Answer: The more air a fish swim bladder contains, the higher the fish will suspend or float in the war.
Explanation:
Which of the following statements describe what a normative system is?
Explanation:
though the statements were not given let just give you a brief review of normative system.
A normative statement explains what should be base of the subject according to the belief through valued judgement that describes the fairness of the subject on public policy. Therefore, the unemployment rate should be lowered is a valued judgement based on the belief that it will bring economic welfare.
Normative systems, i.e., sets of norms, have two main. tions: a) to evaluate human actions, and b) to guide peop. The guidance and the evaluation based on a normativ. be good or bad.In social psychology three different normative behaviours have been identified: obedience, conformity and compliance.In the context of a normative system like law (or religion or morality), every statement of what one ought to do (or ought not to do) requires justification from a more general or basic statement. Such statements lead upward through the normative hierarchy until one reaches a foundational normative premise.
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On what axis is the dependent variable in the graph below?
Growth Rate
100
2828&SARS
90
80
70
60
50
40
30
20
10
0
Full Sun
Plants for Sun and Shade
Partial
Shade
Sun Exposure
Geranium Impatiens Fuchsis Trillium
Partial Sun
Dappled
Sun
Full
Shade
On sunlight exposure depends the growth rate of variable plants
A. Geranium plant is sun loving plant because it showed maximum growth in full sun condition. The growth gradually decreases with the availability of sunlight. In full shade Geranium showed only 10% growth.
B. Impatiens plant showed its maximum growth in partial shade condition. The growth of only 40% occurs in dappled sun condition. In partial sun and full shade conditions it shows only 30% growth. Full sun is harmful for impatiens as it showed only 10% growth.
C. Fuchsia also show maximum growth in partial shade condition. It showed gradual decrease in growth in dappled sun, full shade, partial sun, and full sun respectively.
D. Trillium is shade loving plant because it shows maximum growth in full shade. It shows the lowest growth in full sun which gradually increases in partial sun, partial shade, dappled sun and full shade respectively.
So basically Geranium is full sun plant, Trillium is full shade plant and Impatiens ad Fuchsia are partial shade plants.
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The _____which are numbers that are found on the lower____hand side of each element symbol. This tells you the number of ____of this element in the molecule
Answer:
twenty charecter answer
Currently, 118 elements are listed on
the periodic table. One thing that each
of these elements has in common is
that they are composed of what?
A. Carbon
B. Energy
C. Atoms
D. Mixtures
Answer:
C
Explanation:
Because they 2 or more atoms
The metallic radius of a sodium atom is 186 pm. What is the volume of a sodium atom in cubic meters? Assume the atom is a perfect sphere. The volume of a sphere is calculated from (4/3)π×r3
The volume of the sodium atom is 2.7 * 10^-29 cubic meters
What is the volume of the sodium atom?Let us recall that the volume is the an atom could be approximated to be the same as the volume of a sphere where the atom has been taken to be a sphere.
We know that volume of a sphere = (4/3)π×r3 where r = radius of the sphere. Having known that we convert the radium into meters and we have 186 * 10^-12 m
Thus;
Volume = 4/3 * 3.142 * ( 186 * 10^-12)^3
Volume = 2.7 * 10^-29 cubic meters
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A carpet sells for $24.99 per square yard. What is the price of the carpet per square meter? How much will it cost to carpet an area of 1365 ft2?
The carpet sells for $24.99 per square yard, so the cost of the carpet per square meter area is $40,799.85.
What is the carpet area?The carpet area is that space in your home, which can be used for laying a carpet. It includes the thickness of the internal wall, but excludes the balcony or terrace.
Given that the price of the carpet is $24.99 per square yard, in the first step to convert the square yard to a square meter. 1 square yard = 0.836 square meters now in the second step, calculate the cost per square meter based on the relation in the above step we can write,0.836 square meters of carpet costs $24.99.
Therefore, the cost of 1 square meter of the carpet would cost of the carpet multiplied by one square meter and then divided by the unit in one square yard. From this, the price of the carpet per square meter is known. Price of the carpet per square meter = $24.99 * 1 sq meter/0.836 sq meter price of the carpet per square meter= $29.89. Now we have to find the Cost of the carpet area.
Cost of carpet area = $24.99* 1365 = $40,799.85.
Thus, the Cost of carpet area is $40,799.85.
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Chemistry
zinc tetraoxosulphate vi solution was electrolyzed in such a way that is 0.5A flowed for 32min 10 sec, deposited 0.325g of zinc at the Cathode · Calculate 1. The number of moles of zinc deposited (2) The number of Coulombs of electricity required to deposit I mole of zine (3) The charge on a zinc ion (IF = 96500C, zn=65)
the number of moles of zinc is 0.00492, and coulomb's of charge = 965coulumnbs and charge of zinc is +2
Zinc mass divided by zinc molar mass equals the number of moles of zinc deposited. Moles of zinc deposited in number=0.32/65 ,0.00492 moles of zinc were deposited.
the number of coulombs = I X t so 0.5 X 1930 sec so 965 coulombs.
The charge on zinc ion is +2
In the International System of Units, the unit of electric charge is the coulomb. It is equivalent to the electric charge delivered by a 1 ampere continuous current in 1 second and to 51018/0.801088317 in the current edition of the SI. fundamental charges
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the charge of zinc is +2, there are 0.0049 moles of zinc, and the coulomb's of charge are 965 coulombs.
The number of moles of zinc deposited is equal to zinc mass divided by zinc molar mass. Moles of zinc were deposited in number=0.32/65, amounting to 0.0049 moles.I times time equals 0.5 times 1930 seconds, or 965 coulombs.Zinc ion's charge is +2In the International System of Units, the unit of electric charge is the coulomb.It is equivalent to 51018/0.801 in the most recent edition of the SI, which is the electric charge produced by a 1 amp continuous current in a second.When a direct electric current is passed through an electrolyte, it causes chemical reactions at the electrodes and material degradation. Electrolysis is accomplished using an electrolyte, electrodes, and an external power source.
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how many moles of nickel are in atoms are there in 9.00 X 10^9 Ni atoms
Answer:
1.49 x 10⁻¹⁴ moles Ni
Explanation:
To find the amount of moles in the sample, you need to multiply the amount of atoms by Avogadro's Number. This conversion is a ratio that describes how many atoms there are per every 1 mole. It is important to arrange the ratio in a way that allows for the cancellation of units (atoms should be in the denominator). The final answer should have 3 sig figs like the given value.
Avogadro's Number:
6.022 x 10²³ atoms = 1 mole
9.00 x 10⁹ atoms Ni 1 mole
--------------------------------- x -------------------------------- = 1.49 x 10⁻¹⁴ moles Ni
6.022 x 10²³ atoms
Can you please help me
Answer: true
Explanation:
1. If a chemical reaction occurs and a solid reacts with a gas to form a new solid,
(2 Points)
the mass of the new solid substance increases because a substance in the gas state has mass and contributes
to the new substance's mass.
the mass of the new solid substance does not change because a substance in the gas state does not have
mass and therefore, will not contribute any new mass of the new substance.
it is difficult to determine if the new substance will increase in mass because it depends on the type of gas.
According to the law of conservation of mass, if a chemical reaction occurs and a solid reacts with a gas to form a new solid: (a) the mass of the new solid substance increases because a substance in the gas state has mass and contributes to the new substance's mass.
Law of conservation of mass states that, the mass can neither be created nor be destroyed in a chemical reaction, it can only be transferred rom one form to another or from the reactants to the products of a chemical reaction.
Reactant of a chemical reaction with any state of matter, either solid, liquid or gas has definite mass and that is counted when the final mass of the product is considered.
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The initial water level in a 10-mL graduated cylinder is 4.9 mL . After a sapphire gemstone is added into the cylinder, the water level is 6.2 mL .
What is the volume of the sapphire?
The volume of the sapphire, given the data from the question is 1.3 mL
Data obtained from the questionFrom the question given above the following data were obtained:
Volume of water = 4.9 mLVolume of water + sapphire = 6.2 mLVolume of sapphire =?How to determine the volume of the sapphireThe volume of the sapphire can be obtained by using the displacement method as follow:
Volume of sapphire = (Volume of water + sapphire) - (Volume of water)
Volume of sapphire = 6.2 - 4.9
Volume of sapphire = 1.3 mL
Thus, the volume of sapphire is 1.3 mL
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What is the mass (in grams) of 10.00 L of propane vapor (C3H8) at STP?
The mass (in grams) of 10.00 L of propane vapor ([tex]C_3H_8[/tex]) at STP is 19.668 g
One mole of gas requires 22.4 L of space at STP.
Moles of[tex]C_3H_8[/tex] = 10.0L/22.4L = 0.446 mol
Mass of [tex]C_3H_8[/tex] = 0.446×44.1 = 19.668 g
STP, or standard temperature pressure, refers to the nominal atmospheric conditions at sea level. The temperatures and pressures are 0 degrees Celsius and 1 atmosphere, respectively. In addition to other professionals, the STP value is crucial for physicists, chemists, engineers, pilots, and navigators.STP in chemistry is the abbreviation for Standard Temperature and Pressure. STP is most frequently employed for doing calculations for gases.To learn more about STP visit:
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If you begin with a sample of carbon dioxide at − 60.0 ∘C and 0.50 atm and warm it to 30.0 ∘C and 0.50 atm , then there will be no phase transition in the sample. true or false
If a sample of carbon dioxide is at − 60.0 ∘C and 0.50 atm and warm to 30.0 ∘C and 0.50 atm, then there will be no phase transition in the sample is a True statement.
Phase Transition:
The three main states of matter are Solid, Liquid, and gas. A phase transition occurs from one state of matter to another when energy is supplied or cut.When energy is supplied to the molecules, solid converts to liquid, and liquid converts to gas. Then, the energy increases the speed of the molecules, the density decreases and phase transition takes place.On the other hand, when the supply of energy is stopped from the molecules, the gas turns to liquid, and liquid converts to solid. Both the temperature and pressure are in the same phase.Therefore, there will be no phase transition in the sample. Hence, it is a true statement.
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What orbitals would be present in principal energy level two?
There are 4 orbitals in the principal energy level two. These are: one 2s orbitals and three 2p orbitals (2px, 2py and 2pz).
Principal energy level indicates the energy shell outside the nucleus in which an electron is located. There are 4 principal energy levels. These are: s (sharp), p (principal), d (diffuse) and f (fundamental). The principal energy level can be denoted by the letter n.
Orbital is a function. It describes the behavior and the location of an electron in an atom. The orbitals for any energy level are calculated using the formula n² (where n is the number of orbitals). Hence for energy level 2, the number if orbitals = 2² = 4. Now s has only one orbitals and p has three, therefore a total of four orbitals.
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A child is 3 feet 5 inches tall. How tall is the child in meters? Convert feet to inches, add total inches and convert to meters.
what to use to measure The volume of a small stone.
Answer:
One way to measure the volume of any irregular object (in your case, a stone) is to submerge it completely under water and measure the change in the height of the water level.
Explanation:
Answer: WELCOME TO BRAINLY
Explanation: One way to measure the volume of any irregular object (in your case, a stone) is to submerge it completely under water and measure the change in the height of the water level. This change in the water level (let's say it goes from 50 mIlliliters to 65 milliliters) indicates that the stone has a volume of 15 milliliters.
Hope this helps!
Using the two amino acids alanine and glycine, show a dehydration synthesis reaction forming a dipeptide. Draw the dipeptide of two amino acids joined together by a peptide bond. Label the peptide bond with an arrow. The position of the peptide bond is also the place in the molecule where a water molecule was removed and the two amino acids were joined by a dehydration synthesis reaction (also sometimes referred to as a condensation reaction).
A protein is composed of a combination of amino acids.
What is a peptide bond?A protein is composed of a combination of amino acids. The amino acids join together in a peptide bond. A number of peptide bonds give polypeptides which are the building blocks for proteins.
Now, we can see from the image that the polypeptide bond occurs between the carboxylic group of the glycine and the amine group of the alanine.
This leads to a loss of water molecule and a subsequent formation of the amide bond by condensation.
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Define global warming potential
Answer:
Global warming potential (GWP) is the heat absorbed by any greenhouse gas in the atmosphere, as a multiple of the heat that would be absorbed by the same mass of carbon dioxide (CO 2).
This is an impossible formula. Pretend it is real.
If you had 1 mol of Mn9(ClO4)2 how many moles of O would there be?
Remember that you should never include a 1 as a subscript but for the sake of clarity for this problem you may see a 1 as a subscript.
Make sure your answer includes TWO decimal places.
There are eight moles of oxygen atoms in 1 mole of [tex]Mn_{9}(ClO_{4}) _{2}[/tex].
What is the number of moles of oxygen atoms?We know that a compound is composed of atoms. The atoms that make up the molecule are chemically combined. It is usual that the number of atoms in the compound would correspond with the chemical formula.
Now we have the compound [tex]Mn_{9}(ClO_{4}) _{2}[/tex]. In one mole of the compound we have;
9 Moles of manganese atom2 moles of chlorine atom8 moles of oxygen atomThus, there are eight moles of oxygen atoms in 1 mole of [tex]Mn_{9}(ClO_{4}) _{2}[/tex].
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The 2017 U.S. gross domestic product (GDP) was valued at 19, 390, 604, 000 dollars. How many Gateway Arch-height stacks of
half dollars are needed to match the GDP in value?
Therefore, we require roughly 589,008.49 Empire State building-height stacks of dimes (856,418,343.3 / 1,454).
A stack of 100 dimes is about 5.3 inches tall. $10 is equal to 100 dimes. Therefore, 1,939,060,400 stacks of 100 dimes are required. This astounding number of dimes is 856,418,343.3 feet tall (1,939,060,400 x 5.3/12).
The Empire States Building is 1,454 feet tall when the antenna is added. Therefore, we require roughly 589,008.49 Empire State building-height stacks of dimes (856,418,343.3 / 1,454). Compared to 2016, when it climbed by 2.8 percent, or $503.8 billion, current-dollar GDP increased by 4.1 percent, or $766.1 billion, to a level of $19,390.6 billion in 2017. In 2021, the current-dollar GDP reached a level of $22.99 trillion, up 10.0% or $2.10 trillion.
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What is the weight in grams of 0.45 moles of gold(Au)?
Answer:
88.63494750000001
Explanation:
Convert moles Gold to gram.