Processing math: 100%

Home / Aptitude Tests / Chemistry / The empirical formul...

The empirical formula of a compound containing 0.067mol Cu a...

The empirical formula of a compound containing 0.067mol Cu and 0.066mol O is [Cu = 63.5, O = 16]

A.

$Cu_{2}O$

B.

$CuO$

C.

$CuO_{2}$

D.

$CuO_{4}$

View answer & explanation

Correct answer is B

Cu : O

0.067 : 0.066

mole ratio $\frac{0.067}{0.066}$ : $\frac{0.066}{0.066}$

= 1 : 1

= CuO

See all Chemistry questions & answers

See more WAEC questions & answers

Similar Questions

If an element X of an atomic number Z and mass number Y is irradiated by an intense concentration of...

Which of following acids forms normal salts only? ...

Which of the following substances is a peroxide? ...

MnO2 + 2CI- + 4H+ → MnO2+ + CI2 + 2H2O. The changes is oxidation numbers when the manganese, chl...

Which of the following are chemical changes? I. cooking of food II. digestion of food III...

A particle that contains 9 protons, 10 neutrons and 10 electrons is ...

I. Treatment of cancer II. Detection of leakages in water mains III. Detection of the ages of anci...

The reaction Mg + H2O → MgO + H2 takes place only in the presence of?...

Which of the following is not correct about oxidation number convention? The oxidation number of a/a...

The following are miscible with water except ...

Aptitude Tests

Puzzles Questions and Answers

Data Interpretation Questions and Answers

Abstract Reasoning Questions and Answers

Typing Speed and Accuracy Test

Situational Judgement Questions and Answers

Verbal Reasoning Questions and Answers

Quantitative Reasoning Questions and Answers

Personality Test

Nigeria General Knowledge Questions and Answers

Spatial Reasoning Questions and Answers

Logical Reasoning Questions and Answers

Numerical Reasoning Questions and Answers

Microsoft Office Questions and Answers

View latest jobs in Nigeria today