A 0.784 g sample of magnesium is added to a 250 ml flask and dissolved in 150 ml of water. magnesium hydroxide obtained from the

Question

Lilit [14]

3 years ago

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A 0.784 g sample of magnesium is added to a 250 ml flask and dissolved in 150 ml of water. magnesium hydroxide obtained from the

reaction required 215.0 ml of 0.300 m hydrochloric acid to completely react. how many moles of hcl were used?

Chemistry

1 answer:

V125BC [204] · Answer 1 · 2022-05-25T14:53:28+03:00

A lot of values are given but we must focus only on HCl.

<span>There are 215 mL (0.215 L) of 0.300 M HCl that was completely used. We must remember the moles is simply the product of volume and molarity, that is:</span>

number of moles = 0.215 L * 0.300 M

<span>number of moles= 0.0645 moles HCl</span>