What are those
What are the units for molar mass?
grams/mole
What is the molar mass of C12H22O11?
342g/mol
How many moles are present in 6.24x1021 molecules of NaCl?
0.010 moles
What are the units for mass?
grams
Calculate how many grams are in 0.700 moles of H2O2.
23.8 grams
How many molecules are present in 14 moles of SO2?
8.428x1024
What is Avogadro's number? When do you use it?
6.02x10^23 You use it when you are converting from a unit, particle, atom, etc. to a mole
How many moles are in 22.50 grams of KClO3?
0.18 moles
How many molecules of water (H2O) are present in 236g of water? (Two step problem)
7.89x1024 molecules
What is the percent composition of oxygen in CO2?
72.72%
Calculate the grams present in 0.400 moles of H2S.
13.23 grams
Which of the following is an example of an empirical formula? C2H4 C6H6 H2O H2O2
H2O
What is the percent composition of lithium in LiCl?
16.37%
How many moles are present in 27.8g of KI?
0.17moles
A compound with the empirical formula BH3 has a molar mass of 41.5 g/mol, find the molecular formula.
B3H9