2.5 km is the distance you can travel if a car gets 14 kilometers per liter and have 35 liters of gas.
Total distance traveled in 1 liter = 14 km
Total gas in the car = 35 liters
We have to find how much distance can be covered in in35 liters of gas.
Distance is the length of the path traveled between two points. It is the total movement of an object in a direction. It measures length.
Distance = 35/14
Or, distance = 2.5 km
Therefore, the total distance that can be covered by a car in 35 liters of gas is 2.5 km.
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What type of functional groups or atoms would need to be present in the r groups for hydrogen?
Alcohols (O-H), acids (COOH), or amines (NH2)-polar groups are need to be present in the R group for hydrogen.
This type of functional group contains only hydrogen and carbon as constituent elements. They are commonly represented with ‘R’. They are also called hydrocarbyl groups. The bonding between the carbon atoms can be single, double, or triple.
When we define a functional group, we imply a group of atoms of the same or different elements forming a chemically-active section of a compound and creating a class of new compounds. In organic chemistry, there are many such functional groups. For example, an alcohol group (-OH) defines a particular set of characteristics of the compounds that have it as a constituent. These characteristics will vary from one functional group to the other.
Therefore,
Three function groups Alcohols (O-H), acids (COOH), or amines (NH2) needs to be present in the R group for hydrogen.
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What is the molarity of a solution prepared by dissolving 3.50 mol nacl in enough water to make 1.50 l of solution?
Molarity of a solution prepared by dissolving 3.50 mol nacl in enough water to make 1.50 l of solution is 2.33 mol /L
What is Molarity?Molarity is a physical quantity that describes the substance's number of moles available in the unit liter volume of the solution. A mole per liter is a measurable unit to explain molarity.
Number of moles of the NaCl is
np = 3.50 mol
The volume of the solution is np = 1.50 L
The expression for the molarity solution is cm = np/vp
At the value and get the above expression
Cm = 3.50/ 1.50
= 2.33 mol /L
Thus the molarity of the solution is 2.33 mol /L
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5 examples of ionic bonding
Answer:
NaCl: sodium chloride.
NaBr: sodium bromide.
NaF: sodium fluoride.
NaI: sodium iodide.
KF: potassium fluoride.
Explanation:
Hope this helps!
A 59. 4 g sample of the compound x4o6 contains 14. 4 g of oxygen atoms. What is the molar mass of element x?.
The molar mass of element X is 75 g/mol.
m(X₄O₆) = 59.4 g; mass of the compound
m(O) = 14.4 g; mass of oxygen in the compound
n(O) = 14.4 g ÷ 16 g/mol
n(O) = 0.9 mol; amount of oxygen in compound
m(X) = m(X₄O₆) - m(O)
m(X) = 59.4 g - 14.4 g
m(X) = 45.0 g; mass of element X
Ratio of the elements in the compound: n(X) : n(O) = 4 : 6.
n(X) = 0.9 mol × 4 / 6
n(X) = 0.6 mol; amount of element X in the compound
M(X) = m(X) ÷ n(X)
M(X) = 45.0 g ÷ 0.6 mol
M(X) = 75 g/mol; molar mass of element X
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What concentration gradients are established and maintained by the sodium-potassium exchange pump?.
In addition, the sodium-potassium pump activates integrators that regulate the Mitogen-Activated Protein Kinase (MAPK) Pathway, intracellular calcium, and reactive oxygen species. The majority of the ATP produced by human cells is used to maintain sodium (Na+) and potassium (K+) concentration gradients.
What happens when sodium and potassium move against concentration gradients?Sodium and potassium move in the opposite direction of the concentration gradients. The Na+ K+-ATPase pump maintains a gradient of higher sodium concentrations extracellularly and higher potassium levels intracellularly.
What exactly is the sodium-potassium pump mechanism?The sodium-potassium pump is a cellular mechanism that transports sodium and potassium ions in opposite directions against a concentration gradient using Adenosine triphosphate (ATP). The pump mechanism's purpose is to keep the potassium ion concentration constant.
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You would expect that cells that expend a great deal of energy, such as skeletal muscle cells, would have increased quantities of ___________.
Increased quantities of Mitochondria in the muscle cells leads to produce great amount of energy.
What are skeletal muscle cells?
Skeletal muscle fibers are very elongated cells with a sarcolemma, a very elastic and resilient plasma membrane. Muscle fibers are referred to as syncytiums because they are distinguished by the presence of many nuclei near the cell's edge.
Myocytes, or muscle cells, are the cells that make up muscular tissue. Long, cylindrical, multi-nucleated, and striated cells make up skeletal muscle. Due to their high energy needs, skeletal muscle cells have numerous mitochondria that enable them to produce enough ATP.
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The potential energy stored in high-energy bonds is commonly harnessed when the bonds are split by the addition of _______________ in a process called _____________.
The potential energy stored in high-energy bonds is commonly harnessed when the bonds are split by the addition of water in a process called hydrolysis.
Hydrolysis of high-energy compound (ATP) using water:
ATP + H2O → ADP + Pi
ATP is short for adenosine triphosphate.
Adenosine triphosphate converts to either the adenosine diphosphate (ADP) or adenosine monophosphate (AMP), in this process energy is released.
ATP is made of three components: the triphosphate, the sugar ribose and a nitrogenous base (adenine).
In cellular respiration where organic matter is transformed into carbon dioxide and energy is released for production of ATP.
Glucose and oxygen are reactants and carbon dioxide, water and energy are products of this chemical reaction; cellular respiration creates an energy molecule (ATP) when glucose is broken down.
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Which polymers are composed of amino acids? nucleic acids carbohydrates proteins monomers
Proteins are composed of amino acid
What is amino acid?
Protein is constructed from amino acids. An extended chain of amino acids makes up proteins. There are a huge variety of proteins in your body, each of which performs a vital function.
Amino acid sequences differ for every protein. The protein can adopt various shapes and perform a variety of bodily tasks depending on the sequence.
The alphabet's letters can be compared to amino acids. You can create new words by combining letters in various ways. Similar principles apply to amino acids; by combining them in different ways, proteins of various types can be created.
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Most combustibles, when burned with just the stoichiometric amount of air, under conditions where no heat is lost, will produce flames at what temperature range?
Most combustibles, when burned with just the stoichiometric amount of air, under conditions where no heat is lost, will produce flames between the temperature range of 2100-2300 K.
What do you understand about the process of Combustion?Combustion is a chemical process in which a substance reacts rapidly with oxygen and gives off heat. The original substance is referred to as the fuel and the oxygen's source as the oxidizer. Although it is typically a liquid for airplane propulsion, the fuel can be a solid, liquid, or gas. However, combustion is a chemical reaction between substances, usually including oxygen, and usually accompanied by the generation of heat and light in the form of flame.
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After teaching a group of students about fats and biotransformation, the instructor determines that the teaching was successful when the students identify what as the storage location of bile acids?
The storage location of bile acids is the gall bladder.
Bile acids are made from cholesterol in the liver. Cholic acid and chenodeoxycholic acid are the major bile acids.
These acids are very crucial for the digestion of dietary fats and fat-soluble vitamins(A, D, E, and K).
The bile that is secreted by the liver passes through the hepatic ducts and is stored and concentrated in a thin muscular sac called the gall bladder. The bile then reaches the small intestine where it acts upon the food and helps in its digestion.
Therefore, the instructor determines that the teaching was successful when the students identify the gall bladder as the storage location of bile acids.
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3. Which of the following is determined by a change in velocity divided by time?
a. Speed
b. Acceleration
c. Velocity
Chemisrty seeks to explain the submicroscopic events that lead to macroscopic observations. explain this statement
Submicroscopic events are the structure and behavior of the matter or particle that can use for the macroscopic observations of the matter.
What are submicroscopic elements?Sub microscopic elements are very minute and small particles that can be only seen by a microscope. These are small particles that together make the big matter.
Macroscopic particles are big particles that are constituted by small particles.
Thus, the structure and behavior of the matter or particle that can be used for macroscopic observations of the matter are submicroscopic occurrences.
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When you purchase 0.500 gallon of milk, how many milliliters (ml) of milk are there in the container? (1 gallon = 3.785 l).
When you purchase 0.500 gallon of milk, 7.89mL of milk are there in the container
Unit of liquid capacity equal to four quarts or 231 cubic inches or 3.785 liters called gallon. here 1 gallon = 3.785 l and you purchase 0.500 gallon so multiply the no of cubit feet by 7.47 then and here
volume is 8 then 8×7.47=59.76 so
1 gallon = 3.785=59.76÷3.785=15.78
15.78×0.0500gallon=7.89ml
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Calculate the number of grams of sulfuric acid present in the mixture after the reaction is complete.
3.45g sulfuric acid will be present in the mixture after the reaction is complete.
H₂SO₄ (aq) + Pb(CH₃COO)₂ (aq) ⇌ PbSO₄ (s) + 2 CH₃COOH (aq)
1 mole of sulphuric acid reacts with 1-mole lead(II) acetate to give 1-mole lead(II) sulfate and 2-mole acetic acid.
Mass of lead acetate reacting = 5.00g
Mass of sulphuric acid reacting = 5.00 g
Now, calculating the no. of moles of each reactant involved:
No. of moles = [tex]\frac{Given mass of substance}{Molar mass of substance}[/tex]
Moles of sulphuric acid = [tex]\frac{5.00g}{98.08g}[/tex]
= 0.510 mol
Moles of lead acetate = [tex]\frac{5.00g}{325.29g}[/tex]
= 0.0158 mol
Thus, 0.0158 moles of lead acetate will react with 0.0510 moles of sulphuric acid to give 0.0158 moles of lead sulfate and 0.0158 × 2 = 0.0316 moles of acetic acid.
Therefore, only 0.0158 moles of sulphuric acid will react.
So, the remaining moles = 0.510 - 0.0158
= 0.0352 mol
Remaining mass of sulphuric acid = 0.0352 × 98.08
= 3.45g
Hence, 3.45g sulfuric acid will be present in the mixture after the reaction is complete.
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Solutions of sulfuric acid and lead (II) acetate react to form solid lead (II) sulfate and a solution of acetic acid, 5.00 g of sulfuric acid, and 5.00 g of lead(II) acetate are mixed. Calculate the number of grams of sulfuric acid present in the mixture after the reaction is complete.
7. convert 22.7g to μg
The 22.7 g in μg ( micro gram ) is 22.7 × [tex]10^{-6}[/tex] .
We need to convert between units in order to ensure accuracy and prevent measurement misinterpretation.
For example , we do not measure a pencil's length in kilometers . In this situation , one must convert from kilometers ( km ) to centimeters ( cm ) . In most cases, multiplicative conversion factors are used to convert one unit to another of the same quantity .
Sometimes the units of measurement used may not correspond to the standards required for a particular process or application, as well as the measuring choice and convenience. The mass of object in micro gram unit is less than gram .
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When heat moves through an object in an assembly that is more conductive than materials around it, that is described as ________
When heat moves through an object in an assembly that is more conductive than the materials around it, that is described as Conduction.
The substance or material from which things are made or constructed: Stone is a durable material. Raw materials or serving as raw materials for use or development: Pulp is the raw material of paper. each component. Textile fabric: dress fabric.
In our culture, the material is probably more important than we think. Materials affect transportation, housing, clothing, communications, reactions, food production, and nearly every area of daily life. Useful materials have physical, chemical, or biological properties that are useful even after they have served their intended purpose or function, and when removed from solids and separated from waste, are materials suitable for the same or different purposes. Purpose.
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an object with a mass of 7.5 g raises the level of water in a graduated cylinder from 25.1 ml to 30.1 ml .what is the density of the object?
Determine the number of m in 1600 mm.
Answer:
1600 mm to m = 1.6 meters
Explanation:
Both of the sulfur-chlorine single bonds in scl2 are polar. in which direction should the polarity arrows point?
The polarity arrow should point away from the central sulphur atom.
A polarity arrow indicates the direction of the atom with the greater electronegativity.
Electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.
An electron configuration of sulfur atom: ₁₆S 1s²2s²2p⁶3s²3p⁴
An electron configuration of chlorine atom: ₁₇Cl 1s² 2s² 2p⁶ 3s² 3p⁵
In the molecule SCl₂, a chlorine (λ=3) is more polar than a sulfur (λ=1.8).
An arrow points from sulfur (S) toward chlorine (Cl), since it has a greater electronegativity than sulphur (see the picture below).
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You have 10.0 g each of na, c, pb, cu and ne. which contains the largest number of moles?
Carbon (C) contains the largest number of moles.
Number of Moles of a substance can be defined as the ratio of given mass of the substance to the Molecular Mass of the substance.
We can write,
Number of moles = Given Mass / Molecular Mass euation1
Given Mass of Na, C, Pb, Cu, Ne each = 10.0g
Molecular mass of Na = 22.9898 u
Molecular mass of C = 12u
Molecular mass of Pb = 207.2u
Molecular mass of Cu = 63.546 u
Molecular mass of Ne = 20.1797 u
After substituting the values of molecular mass and given mass of elements in equation1 , we will get
Number of moles of Na = (10/22.9898) = 0.4350
Number of moles of C = (10/12) = 0.8333
Number of moles of Pb = (10/207.2) = 0.0483
Number of moles of Cu = (10/63.546) = 0.1574
Number of moles of Ne = (10/20.1797) = 0.4955
So, we can clearly see that Carbon contains the largest number of moles.
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what is the difference between metals and non non metals
...
Answer:
Metals tend to be hard, metallic-looking solids, with high electrical and thermal conductivity values and high melting and boiling points. Nonmetals tend to be softer, often colorful elements. They may be solids, liquids, or gases.
Answer: Metals are hard and have high melting and high boiling points and high electrical and thermal conductivity values and nonmetals are softer and are substances like solids,liquids,or gases.
The main function of a(n)______ is to help an interaction between two chemicals to occur, changing both chemicals.
The main function of a vitamin is to help interaction between two chemicals to occur, changing both chemicals.
In toxicology, synergism refers to the effect caused when exposure to two or more chemicals at one time results in health effects that are greater than the sum of the effects of the individual chemicals.
What are vitamins?
nutrients may be described as a special elegance of micronutrients that must be received from the food regimen for you to maintain frame homeostasis, which can be liposoluble or hydro soluble.nutrients are natural molecules which can be required for the proper functioning of the frame and the development of organisms.There are thirteen vitamins in people, of which 9 are water soluble and four (A, D, E, okay) are fats soluble.Therefore, the main function of a vitamin is to help interaction between two chemicals to occur, changing both chemicals.
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In biochemistry, where reactants are normally dissolved in water, which bonds or interactions are strongest?
In the biochemistry, Where reactants are normally dissolved in water, The strongest bond or interaction in the water is polar covalent bonds.
Water is a good solvent for polar and ionic compounds. the polarity and hydrogen bonding capability of water makes excellent solvent for polar molecules.In water ionic bonds come apart much more than covalent bonds.
The polarity of water molecules is what makes a widely good solvent . The positive part of the water molecules attract negative part of solute and negative part of water attract positive part of solute.
Water greatly weaken the electrostatic forces and hydrogen bonding between ionic and polar molecules by competing for their attraction.
Hydrogen bonds are weaker than ionic bond and covalent bonds but stronger than dipole dipole interaction.
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In recent years the number of buildings with solar panels has greatly interested. Solar panels reduce the amount of carbon dioxide released in the atmosphere
The carbon footprint of a solar panel is around 20 times lower than that of a coal-powered electrical source. As a result, as soon as you install solar power in your home, your carbon footprint will go down.
As we work to make the planet greener, solar carbon footprints are a hot topic in the field of renewable energy. Even if solar energy reduces carbon emissions in thousands of homes every day, the manufacture of solar panels can have a sizable impact on the environment.
In this article, the carbon footprints of solar panels and the amount of CO2 saved by solar energy will be compared. solar emissions and their alternatives, solar footprints, and some modern approaches to reducing carbon footprints.
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A solar panel's carbon footprint is around 20 times smaller than that of a coal-powered electricity source.
Installing solar panels is an excellent strategy to reduce your carbon impact. Solar energy is a natural, renewable source since it can be renewed instead of finite fossil fuels. When solar energy is turned into electricity, it emits little or no pollution.Solar panels, like any produced product, have a carbon footprint. The good news is that the industry has been hard at work to reduce this as much as possible, perfecting everything from materials to manufacturing. Solar panels' efficiency has grown over the previous decade, and solar photovoltaics (PV) has had the steepest cost decrease of any power technology. A 4kW solar PV system cost around £20,000 in 2010.Learn more about Solar panels here:
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A solution has been prepared with 100 g of drug in 1,000 ml solution. how many mg of drug are in 120 ml of the solution?
A solution has been prepared with 100 g of drug in 1,000 ml solution mg of drug are in 120 ml of the solution is 12000 mg
1,000 ml solution requires =100g of drug;
1 ml solution requires =100÷1000 g of drug;
= 0.1g of drug;
120 ml solution requires =0.1×120g of drug;
= 12g of drug;
= 12000 mg of drug;
The present clinical use of H2O2 continues to be constrained to the elimination of microbial infection and every now and then hemostasis, better information in the direction of the sterilization ability and cell behavior regulatory characteristic of H2O2 inside wounds will decorate the ability to exogenously augment and control recovery.
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how many grams of iron will be needed to react completely with an excess of oxygen to form 40 grams of iron oxide ?
28 grams of iron will be needed to react completely to form 40 grams of iron oxide.
The atomic mass of iron, 2 Fe = 112
The molecular mass of iron oxide (III) = 160
We have to find how many grams of iron are required to form 40 grams of iron oxide.
By using the comparison formula, we get,
The atomic mass of iron/ Molecular mass of iron oxide = Mass of iron/mass of iron oxide.
Mass of iron = 112/160 × 40
Or, the mass of iron = 28grams.
Therefore, 28 grams of iron will be required to react completely to form 40 grams of iron oxide.
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E-mail is usually a poor choice for the distribution of sensitive electronic files because __________.
E-mail is usually a poor choice for the distribution of sensitive electronic files because e-mail is saved on that server which transfers it.
What is E-mail?
Electronic mail, also known as email or e-mail, is a way for individuals to communicate with one another using electronic devices. At a time when "mail" solely referred to physical mail, email was therefore developed as the electronic (digital) equivalent of, or counterpart to, mail (hence the prefix e- + mail).
In many realms of business, trade, government, education, entertainment, and other aspects of daily life in most countries, an email address is now frequently seen as a vital and necessary element.Later, email developed into a ubiquitous (very popular) communication method.
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How many potassium ions are in 5.48 g of potassium sulfate: k2so4 (mw. 174.27 g/mol)?
3.733mol potassium ions are in 5.48 g of potassium sulfate: k2so4
The molar quantity of potassium sulfate:
Here 5.48 g of potassium sulfate and molecular weight of potassium sulfate is 174.27 g/mol are given so 5.48 g / 174.27 g/mol = 0.031mol
0.031mol potassium sulfate, there are 2×0.031=0.062mol with respect to potassium ion
we multiply this molar quantity by avagadro's no
avagadro's no=6.022×10²³
0.062×6.022×10²³=3.733mol
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You have to calculate the mass of a 30.0 ml liquid sample with density of 1.52 g/ml, but you have forgotten the formula. which way of reasoning would help you in finding the correct mass?
It is given that volume & density of liquid = 30.0ml = 1.52 g/ml
is read Density is as 1.529 g/ml
mass of Ime of liquid is 1.529.
option A is correct.
So, the mass of 30 ml liquid. = (1.52 x 30 g/ml ml =
1.529 X 30 g
45.69 g
the question is incomplete
A liquid is a nearly incompressible fluid that conforms to the shape of its container but maintains (nearly) constant volume regardless of pressure. As such, it is one of the four fundamental states of matter (the others being solids, gases, and plasmas) and is the only state with a definite volume, but no fixed shape. Liquids are made up of tiny vibrating particles of atom-like matter held together by intermolecular bonds. Like gases, liquids can flow and take the form of containers.
The volume of a liquid is fixed, but the shape is not. Examples of liquids are water, oil, and blood. A liquid is a state of matter that has a fixed volume but no fixed shape. That is, the liquid takes the shape of its container. The matter is something that takes up space and has weight. Solids keep their shape, liquids take the shape of their containers, and gases fill their containers.
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You have to calculate the mass of a 30.0 mL liquid sample with density of 1.52 g/mL, but you have forgotten the formula. Which way of reasoning would help you in finding the correct mass?
Select one:
a. If 1 mL of a liquid has the mass of 1.52 g, then 30.0 mL has the mass of _____ g.
b. If 1.52 mL of a liquid has the mass of 1 g, then 30.0 mL has the mass of _____ g.
Emeralds are composed of 4 different elements in a fixed proportion. they are composed of 5.030% beryllium, 10.040% aluminum, 31.351% silicon and 53.579% oxygen. the empirical and molecular formula are the same
The empirical formula of emerald is Be3Al2Si6O18.
The empirical formula of a compound tells us about the simplest ratio between the atoms present in the compound.
We are given that emerald consists of 5.030% beryllium, 10.040% aluminum, 31.351% silicon and 53.579% oxygen.
So, we need to first convert the percentages into number of moles of the elements.
Let us assume that there is 100 grams of emerald.
Hence, the mass of each element in it is 5.030 grams beryllium, 10.040 grams aluminum, 31.351 grams silicon and 53.579 grams oxygen.
To calculate the moles, we need to divide their given mass by their molar mass
Moles of beryllium(Be) = 5.030/9 = 0.55
Moles of aluminium(Al) = 10.040/27 = 0.37
Moles of silicon(Si) = 31.351/28 = 1.107
Moles of oxygen(O) = 53.579/16 = 3.34
Now, we need to divide the moles by the lowest common number among them i.e, 0.37.
So, 0.55/0.37 = 1.5
0.37/0.37 = 1
1.107/0.37 = 3
3.34/0.37 = 9
So, the ratio of Be:Al:Si:O comes out to be 1.5:1:3:9.
As the ratio contains 1.5, so we need to multiply it by 2 to get a whole number.
So, (1.5:1:3:9) x 2 = 3:2:6:18
Thus, the empirical formula of emerald is Be3Al2Si6O18.
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The empirical formula of emerald is [tex]Be_{3}Al_{2}Si_{6}O_{18}[/tex].
The empirical formula of a compound tells us about the simplest ratio between the atoms present in the compound.
We are given that emerald consists of 5.030% beryllium, 10.040% aluminum, 31.351% silicon and 53.579% oxygen.
So, we need to first convert the percentages into number of moles of the elements.
Let us assume that there is 100 grams of emerald.
Hence, the mass of each element in it is 5.030 grams beryllium, 10.040 grams aluminum, 31.351 grams silicon and 53.579 grams oxygen.
To calculate the moles, we need to divide their given mass by their molar mass
Moles of beryllium(Be) = [tex]\frac{5.030}{9} = 0.55[/tex]
Moles of aluminium(Al) = [tex]\frac{10.040}{27} = 0.37[/tex]
Moles of silicon(Si) = [tex]\frac{31.351}{28} = 1.107[/tex]
Moles of oxygen(O) = [tex]\frac{53,579}{16} = 3.34[/tex]
Now, we need to divide the moles by the lowest common number among them i.e., 0.37.
So, [tex]\frac{0.55}{0.37} = 1.5[/tex]
[tex]\frac{0.37}{0.37} = 1[/tex]
[tex]\frac{1.107}{0.37} = 3[/tex]
[tex]\frac{3.34}{0.37} = 9[/tex]
So, the ratio of Be:Al:Si:O comes out to be 1.5:1:3:9.
As the ratio contains 1.5, so we need to multiply it by 2 to get a whole number.
So, (1.5:1:3:9) x 2 = 3:2:6:18
Thus, the empirical formula of emerald is [tex]Be_{3}Al_{2}Si_{6}O_{18}[/tex]..
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