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REY [17]
3 years ago
11

I have to circle the one that fits correctly

Chemistry
2 answers:
nadya68 [22]3 years ago
8 0
The answer is chloroplast
RSB [31]3 years ago
4 0
I believe the answer is cell membrane
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3 years ago
Calculate the grams of ethane present in a sample containing 0.8286 moles if the molar mass of ethane is 30.067 g/mol.
BlackZzzverrR [31]
N = m/M

Where,

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5 0
3 years ago
What fraction of the gas phase molecules initially present for 1.0 atm in the chamber are present at 1.0×10−10 torr?
vivado [14]

The fraction of gas phase molecules is calculated by the division of final pressure to the initial pressure.

Fraction = \frac{P_{final}}{P_{initial}}     (1)

Here, initial pressure = 1.0 atm

final pressure = 1.0\times 10^{-10} torr

First, convert torr into atm

1 atm = 760 torr

final pressure = \frac{1.0\times 10^{-10}}{760}

= 1.316\times 10^{-13}atm

Now, put the value of initial and final pressure in formula (1)

Fraction = \frac{1.316\times 10^{-13}atm}{1.0 atm}  

= 1.316\times 10^{-13}  

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4 years ago
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