Molar & atomic Mass
Mole > particles
Mass > Mole
Molar Volume of
Gas
Gas Density
10 10 10 10 10
20 20 20 20 20
30 30 30 30 30
40 40 40 40 40
50 50 50 50 50
Question 1 - 10
What is the molar mass of O?
Answer 1 – 10
16 g
Question 1 - 20
What is the atomic mass of CH4?
Answer 1 – 20
16 amu
Question 1 - 30
What is the atomic mass of HCO3-?
Answer 1 – 30
61 amu
Question 1 - 40
What is the molar mass of H2SO4?
Answer 1 – 40
98.1 g
Question 1 - 50
What is the molar mass of Fe(OH)3)?
Answer 1 – 50
158.7 g
Question 2 - 10
How many moles in 6.02 x 1023
particles of N2?
Answer 2 – 10
1 mole
Question 2 - 20
Find the number of atoms in 3.0 moles of P.
Answer 2 – 20
1.8 x 1024 atoms
Question 2 - 30
Find the number of ions in 4.56 moles of Cl-.
Answer 2 – 30
2.75 x 1024
Question 2 - 40
Find the number of moles in 9.50 x 1024 atoms of Pb
Answer 2 – 40
15.8 moles
Question 2 - 50
Find the number of moles in 8.12 x 1022 molecules of C2H6
Answer 2 – 50
0.135 moles
Question 3 - 10
What is the mass of one mole of PCl3?
Answer 3 – 10
137.3 g
Question 3 - 20
What is the mass of 7.1 mole of O2?
Answer 3 – 20
227 g
Question 3 - 30
How many moles in 90.2 g of H2O?
Answer 3 – 30
5.01 moles
Question 3 - 40
How many grams in 0.015 moles of H2O2?
Answer 3 – 40
0.51 grams
Question 3 - 50
How many moles in 892 g of Fe(OH)2?
Answer 3 – 50
9.94 moles
Question 4 - 10
What is standard temperature and pressure?
Answer 4 – 10
•0 Celcius•1 atm
Question 4 - 20
•What is the volume of a 1 mole of CO2 at STP?
Answer 4 – 20
22.4 L
Question 4 - 30
What is the volume of 2.10 moles of a H2 at STP?
Answer 4 – 30
47.0 L
Question 4 - 40
How many moles are there in 892 L of Helium
at STP?
Answer 4 – 40
39.8 moles
Question 4 - 50
How many moles in 20.6 L of Ar at STP?
Answer 4 – 50
0.920 moles
Question 5 - 10
The density of a gas at STP is 6.7 g/L. What is its molar mass?
Answer 5 – 10
150 g/mol
Question 5 - 20
The density of a gas at STP is 7.8 g/L. What is its molar mass?
Answer 5 – 20
170 g/mol
Question 5 - 30
The density of a gas at STP is 0.168 g/L. What is its molar
mass?
Answer 5 – 30
3.76 g/mol
Question 5 - 40
The density of a gas at STP is 24.5 g/L. What is its molar
mass?
Answer 5 – 40
549 g/mol
Question 5 - 50
The density of a gas at STP is 89.2 g/L. What is its molar
mass?
Answer 5 – 50
2000 g/molOR
2.00 x 103 g/mol