Learn more about the properties, composition, and structure of substances (elements and compounds) with these Chemistry questions and answers. This Test can be used by students preparing for Chemistry in JAMB, WAEC, NECO or Post UTME.
The general gas equation was deprived from______?
Boyle's and Gay Lussac's laws
Boyle's and Graham's laws
Boyle's and Charles' laws
Dalton's atomic theory
Correct answer is C
No explanation has been provided for this answer.
2
3
4
6
Correct answer is A
From the reaction, the total charge on the left side = The total charge on the right side
-2 + 2 + y = -2 : y = -2 : y = 2
6.02 x 1022
6.02 x 1023
3.01 x 1023
1.51 x 1023
Correct answer is C
1 mole = Molar mass of gas = Avogadros number
32g of O2 = 6.02 x 1023
16g of O2 = x
x = \(\frac{16 \times 6.02 \times 10^23}{32}\) = 3.01 x 1023
1.12dm3
2.24dm3
3.72dm3
4.48dm3
Correct answer is B
\(\frac{\text{volume}}{\text{molar volume}}\) = 0.05
1 mole of ethane produces 2 moles of carbon(iv)oxide
∴ 0.05 mole of ethane will produce x moles of carbon(iv)oxide
= \(\frac{\text{volume}}{22.4}\) = 0.05 X 2 X 22.4 = 2.24dm\(_3\)
Which of the following trioxonitrate(V) salts would decompose on heating to form a metal?
Cu(NO3)2
AgNO3
Pb(NO3)2
KNO3
Correct answer is B
No explanation has been provided for this answer.