10-04-2016
Chemistry

contestada

A crucible contains 6.4 g of copper, Cu. How many moles does this amount contain? [Given: Cu=64]

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Simon0770 Simon0770

10-04-2016

Use this formula:
Mass = moles x RFM

(RFM = Relative Formula Mass, or the total mass of a substance or element for example Cu=64)

Rearrange the formula to find the number of moles
Moles = mass/RFM
=6.4/64
= 0.1

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