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3 years ago

Please Helpp

Chemistry

1 answer:

jasenka [17]3 years ago

5 0

Answer:

Mitochondria - energy production in plant and animal tissue

Explanation:

The mitochondria is the power house of a cell. it contains adenosine-tri- phosphate or ATP molecules that produce energy through active transport. The mitochondria is responsible for energy production in both plant and animal cells

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If 15.0 g of nitrogen reacts with 15.0 g of hydrogen, 10.5 g of ammonia is

Alexxx [7]

Answer:

Percent yield = 57%

Explanation:

Given data:

Mass of nitrogen = 15.0 g

Mass of hydrogen = 15.0 g

Mass of ammonia produced = 10.5 g

Percent yield = ?

Solution:

Chemical equation:

N₂+ 3H₂ → 2NH₃

Number of moles of hydrogen:

Number of moles = mass/molar mass

Number of moles = 15.0 g/ 2 g/mol

Number of moles = 7.5 mol

Number of moles of nitrogen:

Number of moles = mass/molar mass

Number of moles = 15.0 g/ 28 g/mol

Number of moles = 0.54 mol

Now we will compare the moles of ammonia with nitrogen and hydrogen from balance chemical equation.

N₂ : NH₃

1 : 2

0.54 : 2×0.54 = 1.08

H₂ : NH₃

3 : 2

7.5 : 2/3×7.5= 5 mol

Theoretical yield of ammonia:

Mass = number of moles × molar mass

Mass = 1.08 × 17 g/mol

Mass = 18.36 g

Percent yield:

Percent yield = (actual yield / theoretical yield) ×100

Percent yield = (10.5 g/ 18.36 g) ×100

Percent yield = 0.57 ×100

Percent yield = 57%

8 0

3 years ago

List three action to reduce risk from hazard

Lena [83]

Answer:

Eliminate the hazard. ...

Substitute the hazard with a lesser risk. ...

Isolate the hazard. ...

Use engineering controls. ...

Use administrative controls. ...

Use personal protective equipment.

Explanation:

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8 0

3 years ago

When water vapor changes to a liquid what is it called

Mademuasel [1]

Answer:

$hello \: your \: answer \: is \: here.$

Explanation:

<h2>Condensation is the change of water from its gaseous form (water vapor) into liquid water. Condensation generally occurs in the atmosphere when warm air rises, cools and looses its capacity to hold water vapor. As a result, excess water vapor condenses to form cloud droplets.</h2>