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Genrish500 [490]
3 years ago
7

14 points!!! Pls tell me answer :3

Chemistry
2 answers:
iren [92.7K]3 years ago
8 0
I’d say the last one
trasher [3.6K]3 years ago
7 0

It's either the last or the first one. I think the first one makes more sense though because it has already told you it created offspring so saying that again seem kind of redundant. Sorry I'm not sure

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The recommended daily allowance (rda of calcium is 1.2 g. calcium carbonate contains 12.0% calcium by mass. how many grams of ca
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1) Calcium carbonate contains 40.0% calcium by weight.
M(CaCO₃)=100.1 g/mol
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w(Ca)=40.1/100.1=0.400 (40.0%)!

2) Mass fraction of this is excessive data.

3) The solution is:

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An unknown liquid is composed of 34.31% c, 5.28% h, and 60.41% i. The molecular weight is 210.06 amu. What is the molecular form
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In an unknown liquid, the percentage composition with respect to carbon, hydrogen and iodine is 34.31%, 5.28% and 60.41% respectively.

Let the mass of liquid be 100 g thus, mass of carbon, hydrogen and oxygen will be 34.31 g, 5.28 g and 60.41 g respectively.

To calculate molecular formula of compound, convert mass into number of moles as follows:

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