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In the molecule K2CO3, how many atoms of _______ are present?

A) Carbon
B)Potassium (K)
C)Oxygen
D)In 5 K2CO3 How many Carbon and Oxygen are there?

User Allanberry
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2 Answers

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Are the numbers meant to be subscript? Assuming they are, there is one carbon, two potassium, and three oxygen.

Answering d), ten potassium, five carbon, and fifteen oxygen
User Gal Shahar
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(0.250 mol K2CO3)(2 mol K/1 mol K2CO3)(6.022 x 10^23 atoms K/1 mol K) = 3.01 x 10^23 atoms Hope this helps! 
User Dannie
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