Question 726:

• JAMB 1992

How many moles of (H+) are there in 1 dm³ of 0.5 M solution of H₂SO₄?

A. 2.0 moles
B. 1.0 moles
C. 0.5 mole
D. 0.25 mole

Question 727:

• JAMB 1992

wH₂SO₄ + xAI(OH)₃ → yH₂O + = zAI₂(SO₄)₃. The respective values of w.x.y and z in the equation above are?

A. 2,2,5 and 1
B. 3,2,5 and 2
C. 3,2,6 and 1
D. 2,2,6 and 2

Question 728:

• JAMB 1992

A given mass of gas occupies 2 dm³ at 300k. At what temperature will its volume be doubled keeping the pressure constant?

A. 400 k
B. 480 k
C. 550 k
D. 600 k

Question 729:

• JAMB 1992

Which of the following is a measure of the average kinetic energy of the molecules of a substance?

A. Volume
B. Mass
C. Pressure from age grades
D. Temperature

Question 730:

• JAMB 1992

If 100 cm³ of oxygen pass through a porous plug in 50 seconds, the time taken for the same volume of hydrogen to pass through the same porous plug is?
(O = 16, H = 1)

A. 10.0 s
B. 12.5 s
C. 17.7 s
D. 32.0 s