The ratio of atoms of different elements in a compound
What is the molecular formula
100
The coefficients for each molecule in the following equation
H2(g) + O2(g) → H2O(l)
What are 2 for H2(g), 1 for O2(g), and 2 for H2O(l)
100
The ideal gas law equation
What is PV=nRT?
100
The dissolving medium (usually water)
What is a solvent
200
The number of atoms in one mole of an element, or the number of molecules in one mole of a covalent compound
What is Avogadro's number, or 6.02 x 10^23
200
The number of atoms expressed as the simplest ratio
What is empirical formula
200
The coefficients for each molecule in the following equation
Fe + O2 → Fe2O3
What is 4 for Fe, 3 for O2, and 2 for Fe2O3
200
The molar volume of gas at STP
What is 22.4L
200
The amount of solute per amount of solvent (units moles per dm3 (liter) or grams per liter)
What is concentration
300
The amount of a substance which contains the same number of chemical species as there are atoms in exactly 12g of the isotope carbon-12
What is a mole
300
The state of matter that has inter-particle forces between the particles that are negligible. The particles are moving freely occupying all the space available to them.
What is a gas
300
The substance that is not used up completely in a reaction
What is the excess reactant
300
A hot air balloon is filled with 30L of air at 24°C and 1.01atm. The balloon is released and raises to an altitude with a temperature of 14°C and a pressure of 25atm. What is the new volume?
117L
300
The number of moles is calculated by
What is number of moles(n)=(concentration*volume (V))/1000
400
The unit for relative mass
What is g mol^(-1)
400
The state of matter which has particles that are closely packed in a fixed position. The inter-particle forces restrict movement and vibrations about a fixed position.
What is a solid
400
The maximum amount of product that can be produced from a given amount of reactant
What is the theoretical yield
400
The combined gas law
What is (P1V1)/T1=(P2V2)/T2
400
When a solute and solvent are mixed together intimately so that the solid phase becomes indistinguishable from the liquid phase
What is a solution
500
Relative molecular mass is calculated by
What is adding the relative atomic masses of the atoms making up the compound
500
All gases have the same kinetic energy at the same temperature, so particles with smaller mass move at ____ speeds.
What is faster
500
The coefficients for each molecule in the following equation
CuCNS + KIO3 + HCl --> HCN + CuSO4 + ICl + H2O + KCl
What is 4 for CuCNS, 7 for KIO3, 14 for HCL, 4 for HCN, 4 for CuSO4, 7 for ICl, 5 for H2O, and 7 for KCl
500
All gases have the same _____ volume and they respond in similar ways to changes in temperature, pressure, and volume.