Gce Model Questions Vol1 2020 Chemistry Question 11

Practice objective / multiple choice question 11 from the 2020 Gce Model Questions Vol1 Chemistry examination.

Gce Model Questions Vol1 2020 Chemistry Objective / Multiple Choice Medium Difficulty
Question 11 GCE_MODEL_QUESTIONS_VOL1 • 2020 • CHEMISTRY • objective

A 2.00 g sample of a solid mixture of NaCl and KCl contains 30.0\% Na by mass. Calculate the number of moles of KCl present in the sample. (Atomic masses: Na = 22.99 g mol\(^{-1}\), K = 39.10 g mol\(^{-1}\), Cl = 35.45 g mol\(^{-1}\).)

Answer Options

Correct Answer A. 6.37e-3
B. 7.89e-3
C. 4.56e-3
D. 5.12e-3
Correct Answer
A
Correct Option:
6.37e-3

About This Question

This is Gce Model Questions Vol1 2020 Chemistry Question 11. It is one of the objective questions from the 2020 Gce Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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