Chemical combination - Jamb Chemistry Past Questions and Answers

Question 61:

• JAMB 1993

A balanced chemical equation obeys the law of?

A. Conservation of mass
B. Difinite proportions
C. Multiple proportions
D. Conservation of energy

Question 62:

• JAMB 1993

How many moles of oxygen molecules would be produced from the decomposition of 2.50 moles of potassium trioxochlorate (V)?

A. 2.50
B. 3.50
C. 3.75
D. 7.50

Question 63:

• JAMB 1993

4.0 g of sodium hydroxide in 250 cm³ of solution contains?

A. 0.40 moles per dm³
B. 0.10 moles per dm³
C. 0.04 moles per dm³
D. 0.02 moles per dm³

Question 64:

• JAMB 1993

Which of the curves above represents the behaviour of 1 mole of an ideal gas?

A. L
B. Ll
C. Lll
D. LV

Question 65:

• JAMB 1993

At 25^oC and 1atm, a gas occupies a volume of 1.50dm³. What volume will it occupy at 100^oC and 1atm?

A. 1.88 dm³
B. 6.00 dm³
C. 18.80 dm³
D. 18.80 dm³
E. 60.00dm³