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3 years ago

What is 30.0 days to seconds?

Chemistry

1 answer:

Agata [3.3K]3 years ago

8 0

Answer:

2.628e+6

Explanation:

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A 12.0-liter sample of air at 25°C and 1.00 atm pressure was collected and dried. After drying, the volume of the sample was exa

zmey [24]

<u>Answer:</u> The mass percent of water in the original air sample is 4.16 %

<u>Explanation:</u>

We are given:

Volume of moist air = 12.0 L

Volume of dry air = 11.50 L

Volume of water lost = (12.0 - 11.50) L = 0.50 L

Here, the percent by mass ratio will be equal to the percent by volume ratio as the number of moles is directly related to the volume.

To calculate the volume percentage of water in the air, we use the equation:

$\text{Volume percent of water}=\frac{\text{Volume of water}}{\text{Volume of air}}\times 100$

Putting values in above equation, we get:

$\text{Volume percent of water}=\frac{0.50L}{12.00L}\times 100\\\\\text{Volume percent of water}=4.16\%$

Hence, the mass percent of water in the original air sample is 4.16 %

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3 years ago

The nucleus of an atom holds 4 neutrons and 4 protons, how many electrons does it have

sweet-ann [11.9K]

It has 4 electrons, because the number of protons and the number of electrons must be equal.

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3 years ago

Predict the precipitate that will be formed in the following reaction:<br> NaF(aq) + AgNO3(aq) →

netineya [11]

The precipitate that will be formed : AgF

<h3>Further explanation</h3>

One indication of the double displacement reaction is the precipitation reaction

Solubility Rules:

• 1. soluble compound

All compounds of Li +, Na +, K +, Rb +, Cs +, and NH4 +

All compounds of NO₃⁻ and C₂H₃O₂⁻

Compounds of Cl−, Br−, I− except Ag⁺, Hg₂²⁺, Pb²⁺

Compounds of SO₄²⁻ except for Hg₂²⁺, Pb²⁺, Sr²⁺, Ba²⁺

• 2. insoluble compounds

Compounds of CO₃²⁻ and PO₄³⁻ except for Compounds of Li +, Na +, K +, Rb +, Cs +, and NH₄ +

Compounds of OH− except Compounds of Li +, Na +, K +, Rb +, Cs +, NH₄⁺, Sr²⁺, and Ba²⁺

Reaction

NaF(aq) + AgNO₃(aq) →NaNO₃(aq)+ AgF(s)

From the solubility rules above, it has been shown that the salts of the Ag⁺ cations are insoluble salts

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3 years ago

I need help on my 6th grade science:)

serious [3.7K]

Nucleus. Hope this helps!!

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4 years ago

Does water evaporates only from the sea

svetlana [45]

Answer:

false

Explanation:

6 0

3 years ago

Read 2 more answers