1. If the temperature of a weather balloon is increased how does the volume of the balloon change?
2. Differentiate between the significance of the coefficients in a balanced chemical equation and the significance of the subscripts in a chemical formula.
3. State the Law of Conservation of Mass and explain its relationship to stoichiometry.
I'm filling out my review sheet and I can't find the answers in my book!!
2. Differentiate between the significance of the coefficients in a balanced chemical equation and the significance of the subscripts in a chemical formula.
3. State the Law of Conservation of Mass and explain its relationship to stoichiometry.
I'm filling out my review sheet and I can't find the answers in my book!!
-
1. PV = nRT This is the ideal gas law.
So if T(temperature) goes up, volume must also go up.(They are directly proportional)
2. Coefficients give mole to mole ratios in a chemical reaction (like in 2H2 + O2 --> 2H2O, 2 mol of H2 are used up to form 2 mol of H2)), while subscripts in chemical reactions just show how much of one element makes up a compound (for example, there is one Na+ ion in one formula unit of NaCl).
3. Mass cannot be created or destroyed; the total mass on one side of the equation has to be the same as the total mass on the other side of the equation. Do not get confused between mass and moles, because moles can be different on opposite sides of the equation.
So if T(temperature) goes up, volume must also go up.(They are directly proportional)
2. Coefficients give mole to mole ratios in a chemical reaction (like in 2H2 + O2 --> 2H2O, 2 mol of H2 are used up to form 2 mol of H2)), while subscripts in chemical reactions just show how much of one element makes up a compound (for example, there is one Na+ ion in one formula unit of NaCl).
3. Mass cannot be created or destroyed; the total mass on one side of the equation has to be the same as the total mass on the other side of the equation. Do not get confused between mass and moles, because moles can be different on opposite sides of the equation.
-
1. The equation which relates temperature and volume is PV = nRT. Assuming pressure remains constant, increasing the temperature (T) will increase the volume (V)
2. Coefficients determine the number of molecules, subscripts determine the number of atoms of a certain element in the molecule. Coefficients change, subscripts do not
3. The mass of a closed system will remain constant over time. This relates to stoichiometry because we can assume that in an isolated chemical reaction, the masses of the reactants and products is the same
2. Coefficients determine the number of molecules, subscripts determine the number of atoms of a certain element in the molecule. Coefficients change, subscripts do not
3. The mass of a closed system will remain constant over time. This relates to stoichiometry because we can assume that in an isolated chemical reaction, the masses of the reactants and products is the same