Home / Aptitude Tests / Chemistry / What mass of K2CrO4 ...
What mass of K2CrO4 is required to pre...

What mass of K2CrO4 is required to prepare 250cm3 of 0.020 mol dm3 solution?
[K2CrO4 = 194.2g mol-1]

A.

0.97g

B.

9.70g

C.

19.42g

D.

97.10g

View answer & explanation

Correct answer is A

1 mole m-3 K2CrO4 contains 194.2g mol-1 in 1000cm3
1 mole m-3 K2CrO4 contains 92.2g mol-1 in 500cm3
1 mole m-3 K2CrO4 contains 48.55g mol-1 in 250cm3
If n molm-3 K2CrO4 contain 48.55
0.02 molm-3 will contain (0.02/1) * (48.55/1) = 0.97g

See all Chemistry questions & answers
See more JAMB questions & answers
Similar Questions

When calcium oxide is heated with carbon, the oxide will ...

Potassium trioxonitrate (V) can be obtained from its solution by---------- ...

Which of the following could not be alkane? ...

In the diagram above the gas Y could be ...

Which of the following roles does sodium chloride play in soap preparation? It ...

An effect of thermal pollution on water bodies is that the ...

USE THE SECTION OF THE PERIODIC TABLE ABOVE TO ANSWER THIS QUESTION.Which letter represents a non-me...

If 0.75 mole of cyclopropane and 0.66 mole of oxygen are mixed in vessel with a total pressure of 0....

Determine the amount of electrons needed to deposit 6.4g of copper during the electrolysis of copper...

A mixture of NaCI(s) and CaCO3(s) is best separated by...

Aptitude Tests

Nigeria General Knowledge Questions and Answers

Verbal Reasoning Questions and Answers

Situational Judgement Questions and Answers

Typing Speed and Accuracy Test

Microsoft Office Questions and Answers

Data Interpretation Questions and Answers

Puzzles Questions and Answers

Quantitative Reasoning Questions and Answers

Personality Test

Numerical Reasoning Questions and Answers

Logical Reasoning Questions and Answers

Abstract Reasoning Questions and Answers

Spatial Reasoning Questions and Answers

See all →


View latest jobs in Nigeria today