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Deffense [45]
3 years ago
12

read 30 points and a Brainliest no link or no robot I don't care what you do to help but it has to be right and all the answers

are in the text

Chemistry
1 answer:
ziro4ka [17]3 years ago
7 0

Answer:

WHY MUST I CRYYYYYYYYYYYY

Explanation:

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6 0
3 years ago
In which atmosphere layer does 80% of the gas in the atmosphere reside
Irina-Kira [14]

Answer:troposphere

Explanation:The troposphere is the layer that holds 80 percent of the total gas in the atmosphere.

4 0
3 years ago
What happens to the velocity when you apply a constant force to an<br> object? *
Degger [83]

Answer: it is part of newtons second law. so the object to your question would accelerate

Explanation: newtons second law

 

8 0
4 years ago
Please help with these two chemistry questions. Image attached.
mars1129 [50]

The answers for the following questions is answered below.

  • Therefore the volume of a gas is 22.4 L
  • <u>Therefore the number of moles of oxygen are 2.37 moles</u>

Explanation:

1. Given:

no of molecules (n) = 6.023 × 10^{23}

volume of gas at STP conditions (V) =22.4 liters

To solve:

Volume of gas (v)

We know;

\frac{n}{N_{a} } =\frac{v}{V}

\frac{6.023 * 10^{23} }{6.023 * 10^{23} }  =\frac{v}{22.4}

1 × 22.4 = v

v =22.4 L

Therefore the volume of a gas is 22.4 L

2. Given:

volume of oxygen gas (v) = 53 L

Volume of gas at STP conditions (V) =22.4 L

To solve:

no of moles of oxygen gas

We know;

n =\frac{v}{V}

n =\frac{53}{22.4}

n =2.37 moles

<u>Therefore the number of moles of oxygen are 2.37 moles</u>

<u></u>

6 0
3 years ago
I need help
liubo4ka [24]

The activation energy in the diagram is 43.8 kcal/ mole, letter C. You have to note that activation energy is the energy needed for the reaction to occur and produce products. Therefore, the spike after H2 and I2 is reacted is the activation energy of the reaction.

3 0
4 years ago
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