What terms are needed to completely describe velocity... A.units
B.number
C.mass
D.direction
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Related Questions
Solve and show work. Li2S + 2 HNO3 --> 2 LiNO3 + H2S (a) Calculate the mass of lithium sulfide that will react with 250 mL of 0.65 M nitric acid (b) How many mL of 9.6 M HNO3 are needed to make 250 mL of 0.65 M HNO3 solution? (c) How many grams of nitric acid are needed to make 750 mL of 9.6 M HNO3.
Which polyatomic ion is found in the compound represented by the formula NaHCO3?(1) acetate (3) hydrogen sulfate (2) hydrogen carbonate (4) oxalate
In a chemical reaction, the mass of the products _____ the mass of the reactants.is greater than is less than is equal to has no relationship to
Would the concentration of hydroxide ion in a 0.30 m solution of potassium hydroxide (koh) be greater than, less than, or equal to 0.30 m?
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Law of multiple proportions or Dalton's Law said that the ratios of the masses of the second element which combine with a fixed mass of the first element will be ratios of small whole numbers.
In this example ratios are whole numbers, A:Z = 2.5 : 1 and A:Z = 2.2 : 1 are not whole number ratios.
Answer:
7.1 and 11.1
Explanation:
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To solve this we use the equation,
M1V1 = M2V2
where M1 is the concentration of the stock solution, V1 is the volume of the stock solution, M2 is the concentration of the new solution and V2 is its volume.
1.75 M x V1 = 0.100 M x 2.0 L
V1 = -.11 L
Answer : The volume of stock solution is, 0.114 L
Solution :
According to the dilution law,
where,
= molarity of
solution = 0.100 M
= volume of
solution = 2.00 L
= molarity of
stock solution = 1.75 M
= volume of
stock solution = ?
Now put all the given values in the above law, we get the volume of stock solution.
Therefore, the volume of stock solution is, 0.114 L
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The next step is to cool the can suddenly by inverting the water and cause water to vapor in the can to condense
hope this helps
The answer is D. Heating the air in the can reduces the air pressure in the can. When the can is inverted in a pan with cold water, the can collapses inwards. This is because the cold water cooled the air around the outside of the can. Cold air has a higher pressure that hot air because it’s denser. Became. The higher air pressure outside presses on the can walls and force them inwards.
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The correct option is d. attractive forces between different covalent molecules are the right response.
Intermolecular forces (IMFs) are attractive interactions between separate covalent molecules. These forces arise due to temporary imbalances in electron distribution, leading to regions of partial charge within molecules. Unlike covalent bonds that hold atoms within a molecule together, IMFs act between different molecules.
This includes forces like London dispersion forces (arising from temporary fluctuations in electron distribution), dipole-dipole interactions (between polar molecules with permanent dipoles), and hydrogen bonding (a special type of dipole-dipole interaction involving hydrogen bonded to electronegative atoms like oxygen, nitrogen, or fluorine). IMFs influence properties like boiling points, solubility, and phase changes. They're crucial in understanding the behavior of liquids and solids, particularly in cases involving non-metallic compounds.
Learn more about molecules here:
The correct answer is: d. attractive forces between separate covalent molecules
Intermolecular forces are the forces of attraction that exist between molecules, rather than within molecules (intramolecular forces). These forces play a crucial role in determining the physical properties of substances, such as boiling points, melting points, and solubility. The options a, b, c, and e are not correct descriptions of intermolecular forces:
a. Forces within covalent molecules that hold them together refer to intramolecular forces, such as covalent bonds, which involve the sharing of electrons between atoms within a molecule.
b. Electrostatic forces between ions are ionic bonds, which involve the transfer of electrons from one atom to another, leading to the formation of positively and negatively charged ions. This is not an example of intermolecular forces.
c. Bonds between hydrogen and oxygen atoms in water molecules refer to hydrogen bonds, which are a specific type of intermolecular force. However, this option does not encompass all types of intermolecular forces.
e. Covalent bonds within a network solid are intramolecular forces that hold the atoms together in a three-dimensional lattice, as seen in substances like diamond or quartz. This is not representative of intermolecular forces.
Therefore, the correct option is d, which correctly describes intermolecular forces as attractive forces between separate covalent molecules. These forces can include London dispersion forces (Van der Waals forces), dipole-dipole interactions, and hydrogen bonding, among others.
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