07-05-2021
Chemistry

contestada

What is the number of moles in 0.025 g (NH4)2Cr2O7?
A) 1.5 x 1022
B) 4.2 x 10-26
C) 6.3
D) 1.0 x 10-4
E) 1.0 x 104

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07-05-2021

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