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Exercises on Interconversion of moles, mass, and number of particles 1 How many moles of NaOH (FW = 40g/mol) are there in 2.0 grams NaOH? 2 How many grams of Na$_2$CO$_3$ (FW=106g/mol) are there in 0.50 moles Na$_2$CO$_3$? 3 How many particles of H$_2$O (FW = 18g/mol) are there in 1.8 grams of H$_2$O? 4 How much does 6.02 x 10$^{23}$ molecules of CO$_2$ (FW = 44g/mol) weigh? 5 How many moles of nitrate are there in 2.0 moles of Fe(NO$_3$)$_3$? 6 How many grams of nitrate are there in 2.0 moles Fe(NO$_3$)$_3$? 7 Calculate the formula weight of water. 8 What is the percentage composition of Na$_2$CO$_3$? 9 Determine the empirical formula of the compound containing 87.5% nitrogen and 12.5% H by mass. 10 What is the molecular formula of the compound if its empirical formula is HCO$_2$ and its molecular weight is 90.0 amu?

          Exercises on Interconversion of moles, mass, and number of particles
1 How many moles of NaOH (FW = 40g/mol) are there in 2.0 grams NaOH?
2 How many grams of Na$_2$CO$_3$ (FW=106g/mol) are there in 0.50 moles
Na$_2$CO$_3$?
3 How many particles of H$_2$O (FW = 18g/mol) are there in 1.8 grams of
H$_2$O?
4 How much does 6.02 x 10$^{23}$ molecules of CO$_2$ (FW = 44g/mol) weigh?
5 How many moles of nitrate are there in 2.0 moles of Fe(NO$_3$)$_3$?
6 How many grams of nitrate are there in 2.0 moles Fe(NO$_3$)$_3$?
7 Calculate the formula weight of water.
8 What is the percentage composition of Na$_2$CO$_3$?
9 Determine the empirical formula of the compound containing 87.5%
nitrogen and 12.5% H by mass.
10 What is the molecular formula of the compound if its empirical formula is
HCO$_2$ and its molecular weight is 90.0 amu?

Exercises on Interconversion of moles, mass, and number of particles
1 How many moles of NaOH (FW = 40g/mol) are there in 2.0 grams NaOH?
2 How many grams of Na2CO3 (FW=106g/mol) are there in 0.50 moles
Na2CO3?
3 How many particles of H2O (FW = 18g/mol) are there in 1.8 grams of
H2O?
4 How much does 6.02 x 10^23 molecules of CO2 (FW = 44g/mol) weigh?
5 How many moles of nitrate are there in 2.0 moles of Fe(NO3)3?
6 How many grams of nitrate are there in 2.0 moles Fe(NO3)3?
7 Calculate the formula weight of water.
8 What is the percentage composition of Na2CO3?
9 Determine the empirical formula of the compound containing 87.5%
nitrogen and 12.5% H by mass.
10 What is the molecular formula of the compound if its empirical formula is
HCO2 and its molecular weight is 90.0 amu?

Added by Heidi W.

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