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felecitycxx felecitycxx
  • 08-02-2017
  • Chemistry
Answered

A sample of a hydrate has a mass of 5.026 g. After it is heated, it has a mass of 3.492 g. What is the percentage by mass of water in the hydrate?

  1. 19.40%
  2. 27.92%
  3. 30.52%
  4. 69.48%

Verified Answer :

Nirina7
Nirina7 Nirina7
  • 18-02-2017

hydrate has a mass of 5.026 g 
After it is heated, it has a mass of 3.492 g, that means the mass of water is
mH2O=5.026-3.492=1.534g
using the main formula
%H2O= (mass of water / mass of hydrate ) x100= 30.52%
the answer is 3. 30.52%

Answer Link
gersonzyana gersonzyana
  • 30-04-2021

Answer:

c

Explanation:

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