General Chemistry Answers

How many grams of NO will be produced, if 1.93g of H2O are also produced in the reaction below? Show the solution?

4NH3 + 5O2 -----> 4NO + 6H2O

How many grams of H2O are needed if 41.85g of O2 are to be produced from the reaction below? Show the solution

2K2O2 + 2H2O -----> 4KOH + O2

How many grams of NH3 will be produced, if 97.77g of CaCO3 are also produced in the reaction below? Show the solution

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