Answer to Question #43040 in Chemistry for Mel

Question #43040

10 mole of Ba(NO3)2 dissolves in water to give how many NO3- ions?
1 - 6.02 x 10 to the 23
2 - 6.02 x 10 to the minus 23
3 - 6.02 x 10 to the 24
4 - 1.204 x 10 to the 23
5 - 1.204 x 10 to the 25

What I want to know is how do I work out the question.

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