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3 years ago

Convert 7.8 moles of carbon tetrafluoride into grams.

Chemistry

1 answer:

Vesnalui [34]3 years ago

6 0

Answer:

686.43363984 is the answer when 7.8 moles is converted.

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Where do producers get their energy?

Ahat [919]

The answer is letter b. from the sunlight. Plants are also referred as producers. Typically, plants gets their energy from the sun, wherein it helps them produce their own food, through the sunlight, the carbon dioxide present, the process wherein the producers undergo is known as photosynthesis.

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4 years ago

The total mass of the atmosphere is about 5.00 x 1018 kg. How many moles each of air, O2, and CO2 are present in the atmosphere?

n200080 [17]

<u>Answer:</u> The moles of oxygen and carbon dioxide in air is $3.63\times 10^{19}mol$ and $7.18\times 10^{16}mol$ respectively

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Given mass of atmosphere = $5.00\times 10^{18}kg=5.00\times 10^{21}g$

Average molar mass of atmosphere = 28.96 g/mol

Putting values in above equation, we get:

$\text{Moles of atmosphere}=\frac{5.00\times 10^{21}g}{28.96g/mol}=1.73\times 10^{20}mol$

We know that:

Percent of oxygen in air = 21 %

Percent of carbon dioxide in air = 0.0415 %

Moles of oxygen in air = $\frac{21}{100}\times 1.73\times 10^{20}=3.63\times 10^{19}mol$

Moles of carbon dioxide in air = $\frac{0.0415}{100}\times 1.73\times 10^{20}=7.18\times 10^{16}mol$

Hence, the moles of oxygen and carbon dioxide in air is $3.63\times 10^{19}mol$ and $7.18\times 10^{16}mol$ respectively

6 0

3 years ago

A substance that contains more hydroxide ions than hydronium ions in solution could have which pH value?

Hunter-Best [27]

Hydronium ions are basically H+ ions.
So if [OH-]>[H+]
This means that the substance is more basic.
and basic substances a pH>7.
Therefore a possible pH value would be 10.

6 0

3 years ago

Convert 2.8 pounds to kg

Pani-rosa [81]

Answer:

1.27006 kg

Explanation:

1 lb is equal to 0.907185 kg

5 0

4 years ago

Read 2 more answers

How do I calculate the moles consumed in a vinegar titration?

Shtirlitz [24]

Answer: Use the titration formula

Explanation:

8 0

4 years ago