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ss7ja [257]
2 years ago
13

How many grams are in 6.02E23 atoms of carbon?

Chemistry
1 answer:
Oksanka [162]2 years ago
8 0

Answer:

no sure

Explanation:

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The outermost energy shell of an atom likes to be full with 8 electons

Explanation:

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Which of these common substances is a homogeneous mixture?
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whole milk ,table salt , maple syrup

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Given the Henry’s law constant for O2(4.34*109Pa) at 25° C, calculate the molar concentration of oxygen in air-saturated and O2s
Flauer [41]

This is an incomplete question, here is a complete question.

The Henry's law constant for oxygen dissolved in water is 4.34 × 10⁹ g/L.Pa at 25⁰C.If the partial pressure of oxygen in air is 0.2 atm, under atmospheric conditions, calculate the molar concentration of oxygen in air-saturated and oxygen saturated water.

Answer : The molar concentration of oxygen is, 2.67\times 10^2mol/L

Explanation :

As we know that,

C_{O_2}=k_H\times p_{O_2}

where,

C_{O_2} = molar solubility of O_2 = ?

p_{O_2} = partial pressure of O_2 = 0.2 atm  = 1.97×10⁻⁶ Pa

k_H = Henry's law constant  = 4.34 × 10⁹ g/L.Pa

Now put all the given values in the above formula, we get:

C_{O_2}=(4.34\times 10^9g/L.Pa)\times (1.97\times 10^{-6}Pa)

C_{O_2}=8.55\times 10^3g/L

Now we have to molar concentration of oxygen.

Molar concentration of oxygen = \frac{8.55\times 10^3g/L}{32g/mol}=2.67\times 10^2mol/L

Therefore, the molar concentration of oxygen is, 2.67\times 10^2mol/L

8 0
3 years ago
Sometimes the color of an animal closely resembles the color of its environment. Which of the following is the most likely reaso
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Answer:

The answer is D

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Animals add color to their environment so a mate can see how creative the animal is.

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Which describes an example of genetic engineering?
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i think its number 3

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