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3 years ago

Which statement below references interactions between the geosphere, the hydrosphere and the biosphere?

Chemistry

2 answers:

erastovalidia [21]3 years ago

7 0

Ekekoskekeoejekskdodjdod

Alexxx [7]3 years ago

7 0

Answer: Plants Roots take in water through their roots.

Explanation:

Biosphere is the plant and hydrosphere is the water they take in so it has both so this is correct.

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What is the percent composition of hydrogen if a sample is found to contain 7 grams of hydrogen, 32 grams of nitrogen, and 7 gra

nata0808 [166]

<u>Answer:</u> The percent composition of hydrogen in the sample is 15.22 %

<u>Explanation:</u>

We are given:

Mass of hydrogen = 7 grams

Mass of nitrogen = 32 grams

Mass of carbon = 7 grams

Total mass of the sample = 7 + 32 + 7 = 46 grams

To calculate the percentage composition of hydrogen in sample, we use the equation:

$\%\text{ composition of hydrogen}=\frac{\text{Mass of hydrogen}}{\text{Mass of sample}}\times 100$

Mass of sample = 46 g

Mass of hydrogen = 7 g

Putting values in above equation, we get:

$\%\text{ composition of hydrogen}=\frac{7g}{46g}\times 100=15.22\%$

Hence, the percent composition of hydrogen in the sample is 15.22 %

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LuckyWell [14K]

Answer: its D

Explanation:

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MakcuM [25]

I believe it is 1/100th of a meter

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3 years ago

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What is the mass of 0.80 moles of Mg? (1 point)

Aneli [31]

Answer:

m = 19 grams

Explanation:

Given that,

No. of moles, n = 0.8

The molar mass of magnesium, M = 24.305 u

We need to find the mass of 0.80 moles of Mg. We know that given mass to the molar mass is equal to no of moles. Let the mass is m. So,

$n=\dfrac{m}{M}\\\\m=n\times M\\\\m=0.8\times 24.305 \\\\m=19.444\ \text{grams}$

m = 19 grams

So, the mass of 0.8 moles of Mg is 19 grams.

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I am Lyosha [343]

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