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den301095 [7]
3 years ago
9

ASAP! I have 20 min to finish this i need help

Chemistry
1 answer:
rodikova [14]3 years ago
7 0
The real answer is B
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What is the law of fossil succession?:
nata0808 [166]

Different Fossil organisms succeed one another to go up through the different rock layers in a definite and determinable order. Therefore, any time period can be recognized by its fossil content

Explanation:

Different Fossil organisms succeed one another to go up through the different rock layers in a definite and determinable order. Therefore, any time period can be recognized by its fossil content

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4 things that float and sink on water
tino4ka555 [31]

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4 0
4 years ago
A 22.8-gram sample of gas is found to have a volume of 1.5 liters at 287 K and 0.98
Oksanka [162]

Answer:

365.4 g/mol is the molar mass of this gas.

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P = Pressure of gas = 0.98 atm

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n = number of moles of gas = ?

R = Gas constant = 0.0821 L.atm/mol.K

T = Temperature of gas = 287  K

Putting values in above equation, we get:

(0.98 atm)\times 1.5 L=n\times (0.0821 L.atm/mol.K)\times 287K\\\\n=0.06239 mole

Moles of gas = n = 0.06239 mol

Mass of gas = m = 22.8 g

Molar mass of gas = M

0.06239=\frac{22.8 g}{M}

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365.4 g/mol is the molar mass of this gas.

8 0
3 years ago
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ziro4ka [17]
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I think, but i hope this helps :)
8 0
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