3 years ago

Assignment a decomposer food chain exploration. Need help

Chemistry

1 answer:

satela [25.4K]3 years ago

7 0

I just finished my assignment and this is what I got. Try to put these in your own words. (: Hope this helps.

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natima [27]

It should be C but not sure

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3 years ago

Calculate the mass of chloroform that contains 1.00X10^12 molecules of chloroform

Brums [2.3K]

Molar mass of chloroform (CHCl3)
C = 1 * 12 = 12 a.m.u
H = 1 * 1 = 1 a.m.u
Cl = 3 * 35.5 = 106.5 a.m.u
Molar Mass (CHCl3) = 12 + 1 + 106.5 = 119.5 g / mol

Knowing that: The value of Avogadro's constant corresponds to approximately $6,02*10^{23}$ molecules, if chloroform contains $1,00 * 10^{12}$ molecules. 
We have:

 $1,00 * 10^{12} * 6,02 * 10^{23} = 6,02 * 10 ^ {35} molecules$ 

Now, how many grams are there in the chloroform molecule?

grams -------- molecules
119,5 → $6,02 * 10^{23}$
x → $6,02 * 10^{35}$

$6,02 * 10 ^ {23} * x = 119,5 * 6,02 * 10 ^{35}$
$6,02 * 10 ^ {23}x = 719,39 * 10^{35}$
$x = \frac{719,39}{6,02}*10^{35-23}$
$\boxed{x = 119,5*10^{12}grams}$

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3 years ago

How many moles of hydrogen sulfide are contained in a 77.7-8 sample of this gas?

valentina_108 [34]

Answer:

its either C or D my guess is C though because 35.0g of hyddrogen is =1.03 mol

Explanation:

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3 years ago

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ololo11 [35]

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andriy [413]

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Organisms genes come from both mother and father :3

Explanation:

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