Mole study guide

0.0049 mol

# of moles in 0.50 g of sodium bromide (NaBr)

5.425 mol

A chemist plans to use 435.0 grams of ammonium nitrate (NH4NO3) in a reaction. how many moles of the compound is this?

19.9 g

Ca(C2H3O2)2 calculate the mass of carbon that can be obtained from 65.3 g of the compound

CCl4

Empirical formula of 7.8% carbon and 92.2% chlorine

Carbon 6 Hydrogen 12 Oxygen 6

How many atoms of each element are present in C6H12O6

empirical formula

The basic ratio that gives the lowest whole-number ratio of the atoms of the elements in a compound.

44 g/mol

What is the molar mass of CO2?

molecular formula

a whole number multiple of the empirical formula

molar mass

amount in grams of one mole of a compound or element

CHCl3

empirical formula of 10.0% C, 0.80% H, and 89.1% Cl

4.65 g

find the mass in grams of 1.00x1023 molecules of N2

add the masses together from the periodic table

how do you find molar mass

3.6x1023 molecules

how many atoms of zinc are in 0.60 mol of zinc

204 g

how many grams are in 0.658 mol of calcium phosphate Ca(PO4)2

5.85 mols

how many moles is 3.52x1024 molecules of water

6.02 x 1023

how many particles are in Avogadro's #

3.69x1021 particles

how many particles are there in 1.43 g of a molecular compound with a gram molecular mass of 233 g

310.18 g/mol

molar mas of Ca3(PO4)2

C= 10.1% H=0.79% Cl= 89.1%

sample consists of 5.34 g of carbon. 0.42 g of hydrogen, and47.08 g of chlorine. what is the percent composition of the compound

percent composition

shows relative amounts of elements in a compound

The elements and the # of each element in a compound

what does a chemical formula tell you about a compound?

Mole

what is the SI unit for the # of representative particles in a substance

% mass of element = (mass of element/total mass of compound)x100

what is the formula for percent composition

32 g

what is the mass of 1.00 mol of O2