4 years ago

Calculate the vapor pressure at 25° C of a

Chemistry

1 answer:

Leokris [45]4 years ago

7 0

Answer: 35.4 degrees

Explanation: because it cold

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Calculate the average atomic mass element X

Leto [7]

Answer:

39.02 amu

Explanation:

The average atomic mass of an element can be calculated as follows :

$X=\dfrac{9.67\times 38+78.68\times 39+11.34\times 40+0.31\times 41}{100}\\\\X=\dfrac{3902.29}{100}\\\\X=39.02\ amu$

So, the atomic mass of the element X is 39.02 amu.

5 0

3 years ago

Which civilization formed a confederation thay may have impacted the us government

lana66690 [7]

Answer:

Anasazi

Explanation:

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3 years ago

How many milligrams of CO exist in 12000 liters of air with 10 ppm of CO?

VARVARA [1.3K]

Answer:

The mass of CO in 12,000 Liters of air is $12\times 10^4 mg$ .

Explanation:

The ppm is the amount of solute (in milligrams) present in one Liter of a solvent. It is also known as parts-per million.

To calculate the ppm of oxygen in sea water, we use the equation:

$\text{ppm}=\frac{\text{Mass of solute}(mg)}{\text{Volume of solution}(L)}$

The ppm concentration of CO = 10 ppm

Mass of CO = m

Volume of air = 12,000 L

$10 =\frac{m}{12,000 L}$

$m=10\times 12,000 mg=120,000 mg=12\times 10^4 mg$

The mass of CO in 12,000 Liters of air is $12\times 10^4 mg$ .

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3 years ago

What is common among all three types of forests in the Venn diagram?

Kruka [31]

Answer:

it looks like forests

Explanation:

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3 years ago

Li + H2O → H2 + LiOH is it Balanced or Unbalanced

Sav [38]

Answer:

It is Unbalanced

Explanation:

2Li + 2H2O→ 2LiOH+ H2

8 0

3 years ago