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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
Create a class named TIME that has hours, minutes, and seconds, data members, as integers. The class has gettime () to get the specified value in the object, showtime () to display the time object in hh:mm:ss format. Write a main () function to create two-time objects. get the value in two objects and display all time objects.
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
Write a C++ program that takes a 2D pointer array and calculates the sum of even and odd using
pointer notation of the array.
