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What number of liters of STP CO2 is produced when 7x10^23 molecules of O2 is consumed? Show the solution
2 Al + 3 CuCl₂ → 2 AICI3 + 3 Cu
Molar masses: 27.0 g/mol Al,
134.5 g/mol CuCl2, 63.5 g/mol Cu
A: How many grams of CuCl₂ are
necessary to consume 10 g Al?
B: How many grams of Cu will be
produced?
A chemist performed this reaction and obtained 45.5 g BaSO4. How much HCI
was also produced?
Molar masses: 233.4 g/mol BaSO4,
36.5 g/mol HCI
A. 9.49 g HCI
C. 5.35 g HCI
B. 388 g HCI
D. 7.12 g HCI
2.50 moles of BaCl₂ are reacted. How many moles of BaSO4 are produced?
A. 2.50 mol BaSO4
B. 3.75 mol BaSO4
C. 1.67 mol BaSO4
D. 5.00 mol BaSO4
If 1.20 g CO3 are reacted, how much NH3 will be produced?
Molar masses:
60.0 g/mol CO3, 17.0 g/mol NH3
A. 0.17 g CO3
B. 0.68 g CO3
C. 8.47 g CO3
D. 2.12 g CO3
If 0.425 mol H₂O are produced, how
many moles of CO3 were reacted?
A. 0.425 mol CO3
B. 0.850 mol CO3
C. 0.213 mol CO3
D. 0.626 mol CO3
25.0 g H₂ are reacted, how much Fe is
produced?
Molar masses: 2.02 g/mol H2, 55.9 g/mol Fe
A. 0.903 g Fe
B. 1,112 g Fe
C. 692 g Fe
D. 346 g Fe
10.3 moles of H₂O are produced. How
many moles of Fe are also produced?
A. 15.5 mol Fe
B. 6.87 mol
C. 5.2 mol Fe
D. 20.6 mol Fe
If 17.3 g SO₂ are reacted, how much O₂
is consumed?
Molar masses: 32.0 g/mol O₂, 64.0 g/mol SO2
A. 17.3 g O2
C. 0.270 g O2
B. 0.135 g O2
D. 4.33 g O2
using a table, differentiate between the percentage composition by volume of atmospheric air and dissolved air
