Seudónimo Seudónimo

08-04-2017
Chemistry

contestada

An 8.10-g sample of hydrated magnesium carbonate is heated. It has a mass of 4.94 g after heating. What is the percentage by mass of water in the hydrate?

3.16%
17.6%
39.0%
61.0%

Respuesta :

nildacardenas37 nildacardenas37

29-06-2017

8.10-4.94=3.16=mass of water
3.16/8.10 X 100 = 39.0%

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tonyv2576 tonyv2576

07-12-2018

C or 3rd option: 39.0%

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