A given volume of oxygen diffused through a porous partition in 8 seconds. How long would it take the same volume of carbon (IV) oxide to diffuse under the same condition? [C = 12.0, O = 16.0]
A. 5.8 seconds B. 6.8 seconds C. 9.4 seconds D. 11.0 seconds Correct Answer: Option C C. 9.4 secondsWhich of the following apparatuses can be used to measure accurately a specific volume of a liquid?
A. Beaker B. Conical flask C. Measuring cylinder D. Pipette Correct Answer: Option C C. Measuring cylinderWhat is the volume occupied by 2 moles of ammonia at s.t.p?
A. 44.8 dm-3 B. 22.4 dm-3 C. 11.2 dm-3 D. 5.6 dm-3 Correct Answer: Option A A. 44.8 dm-3Consider the neutralization reaction represented by the following equation: Na2CO3 + 2HNO3 → 2NaNO3 + H2O + CO2 The stoichiometric ratio of acid to base is?
A. 2:2 B. 2:1 C. 1:2 D. 1:1 Correct Answer: Option B B. 2:1Products
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