Chapter 10 Pearson chemistry study guide

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Question Answer
the amount of a substance that contains 6.02 * 10>23 representative particles of that substanceMole(mol)
the number of representative particles contained in one mole of a substance; equal to 6.02 * 10>23avogadro's number
the smallest unit into which a substance can be broken down without a change in composition, usually atoms, molecules, or ionsrepresentative particle
what is the representative particle of water / H2Omolecule
what is the representative particle of copper / Cuatom
what is the representative particle of atomic nitrogen / Natom
what is the representative particle of Calcium ion Ca 2+ion
what is the representative particle of Calcium fluoride CaF2Formula unit
a term used to refer to the mass of a mole of any substancemolar mass
equal volumes of gases at the same temperature and pressure contain equal numbers of particlesavogadro's hypothesis
the conditions under which the volume of a gas is usually measured; standard temperature is 0degree. celcius, and standard pressure is 101.3 kpa, or 1 atmospherestandard temperature and pressure (stp)
the volume occupied by 1 mole of a gas at standard temperature and pressure (STP); 22.4 LMolar volume
the percent by mass of each element in a compoundpercent composition
how many grams are in 22 grams of argon?0.55
calculate the number of atoms in 3.50 mol of Ge2.107 * 10>24 atoms Ge
calculate thhe moles containing in 3.8*10>27 atoms of Sb22.4 mol Sb
How many formula units are there in 24 grams of FeF31.3 * 10>23 atoms FeF3
How many grams are there in 7.4 * 10>23 molecules of H2SO4120g H2SO4
Give the % composition of Sodium bromide %NA = % Br =%Na = 22.4% %Br =77.6%
what is the equation for % by mass of elementmass of element/mass of compound * 100
when a 13.60-g sample of a compound containing only MgO is decomposed, 5.40 g of oxygen is obtained. find the percent coposition for both60.3% Mg 39.7% O
what do the percents of elements of a compound have to add up to?100%
calculate the mass of carbon and the mass of hydrogen in 82.0 g of propane (C3H8)67.1 g C 15 g H
a formula with the lowest whole-number ratio of elements in a compound; empirical formula
74.8% carbon and 25.2% hydrogen find the empirical formula.CH4
how does the molecular formula of a compound compare with the empirical formula?the molecular formula of a compound is either the same as its experimentally determined emperical formula, or it is a simple whole-number multiple of its empirical formula
a compound with an empirical formula of CFBrO and a molar mass of 254.7 grams per moleC2F2Br2O2
what is the order of mole atom and massMass - mole - particles