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2 years ago

Answer the question below 100 points and brainlist

Chemistry

2 answers:

Kipish [7]2 years ago

5 0

Answer:

i think A but im not sure

Explanation:

dedylja [7]2 years ago

3 0

Answer:

Metamorphic rock.

Explanation:

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3 years ago

Which of the following measurements is equal to 2,300 dL

kolbaska11 [484]

230,000. and that weird u
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3 years ago

Using the accepted value for the volume of 1 gram of water at the temperature of the room that you reported above, what is the a

inessss [21]

Write procedural steps that allow you to demonstrate the sun's role in the water cycle using common material - for each explain what you are modeling and how the materials you have chosen represent nature.

Using the accepted value for the volume of 1 gram of water at the temperature of the room that you reported above, what is the accepted value for the density of water

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3 years ago

Compare amplitudes, wavelengths, and frequencies of waves

mr_godi [17]

Answer:

The answer is option b.

Explanation:

Amplitude is the distance apart each wave is.

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2 years ago

How many moles of hydrogen are in the sample? Round your answer to 4 significant digits.

finlep [7]

Answer:

1.56 mol H₂

Explanation:

Mg₃(Si₂O₅)₂(OH)₂

There are 4 Si moles per Mg₃(Si₂O₅)₂(OH)₂ mol. With that in mind we can calculate how many Mg₃(Si₂O₅)₂(OH)₂ moles are there in the sample, using the given number of silicon moles:

3.120 mol Si * $\frac{1molMg_3(Si_2O_5)_2(OH)_2}{4molSi}$ = 0.78 mol Mg₃(Si₂O₅)₂(OH)₂

Then we can convert Mg₃(Si₂O₅)₂(OH)₂ moles into hydrogen moles, keeping in mind that there are 2 hydrogen moles per Mg₃(Si₂O₅)₂(OH)₂ mol:

0.78 mol Mg₃(Si₂O₅)₂(OH)₂ * 2 = 1.56 mol H₂

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3 years ago