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SCIENCE/CHEMISTRY 11. The symbol for SI unit of mole is __________?
a. m
c. mol
b. mo
d. ml
12. Calcium carbonate (CaCO3 Molar Mass = 100.09 g/mole) is an antacid used to
neutralize extra acid in the stomach. Lorie is prescribed by the doctor to take
250mg tablet of CaCO3 three times a day. How many moles of CaCO3 will Lorie
consume for 3 days?
a. 0.0252 moles
c. 0.0242 moles
b. 0.0225 moles
d. 0.0235 moles
13. Methane (CH4Molar Mass = 16.04 g/mol) is one of the greenhouse gases. If
32.08 g of CH4 is released in the atmosphere, how many molecules of CH4 are
added in the atmosphere?
a. 1.20 x 1024
c. 6.02 x 1024
b. 1.20 x 1023
d. 6.02 x 1023
14. Ethyl butanoate (C3H7COOC2H5) is the substance responsible for the aroma of
pineapple. What is the molar mass of ethyl butanoate?
a. 118.00 g/mole
c. 120.12 g/mole
b. 117.12 g/mole
d. 116.18 g/mole
15. People usually use hydrogen peroxide (H2O2 Molar Mass = 34.02 g/mole) to clean
their wounds. If Chelsea used 1.0 g of H2O2 to clean her wound, how many moles
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