Fundamentals E.15

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Sydney Jacobs 1C
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Joined: Thu Jul 25, 2019 12:15 am
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Fundamentals E.15

Postby Sydney Jacobs 1C » Thu Oct 03, 2019 1:11 pm

The question reads: "The molar mass of the metal hydroxide M(OH)2 is 74.10 g/mol. What is the molar mass of the sulfide of this metal?" What does the question mean by sulfide?

Michelle Song 1I
Posts: 102
Joined: Thu Jul 11, 2019 12:17 am

Re: Fundamentals E.15

Postby Michelle Song 1I » Thu Oct 03, 2019 1:23 pm

The sulfide of the metal would be the compound formed by the metal (M) and sulfur. So the formula of the sulfide of the metal would look something like MS. You should first find out what element the metal is.
Last edited by Michelle Song 1I on Thu Oct 03, 2019 2:27 pm, edited 1 time in total.

Ashley Kao 1H
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Joined: Thu Jul 25, 2019 12:16 am

Re: Fundamentals E.15

Postby Ashley Kao 1H » Thu Oct 03, 2019 1:27 pm

Yes! I agree! Thus, in order to solve for the molar mass of metal sulfide, you would need to find the molar mass of M by subtracting the molar mass of hydroxide from 74.1 g/mol. Then, add the difference of the two to the molar mass of sulfide, which is 32.065 to get the molar mass of metal sulfide.

Sofia Barker 2C
Posts: 101
Joined: Wed Sep 18, 2019 12:21 am

Re: Fundamentals E.15

Postby Sofia Barker 2C » Thu Oct 03, 2019 2:20 pm

The question refers to the compound formed by sulfur and the unknown metal.


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