3 years ago

What is the correct answer? please

Chemistry

1 answer:

Maslowich3 years ago

5 0

Answer:

The answer should be D

Explanation:

It states the simple weather conditions and such

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If 1.320 moles of CH4 reacts completely with oxygen, how many grams of H2O can be formed

laiz [17]

Answer:

47.5 g of water can be formed

Explanation:

This is the reaction:

CH₄ + 2O₂ → CO₂ + 2H₂O

Methane combustion.

In this process 1 mol of methane react with 2 moles of oxygen to produce 2 moles of water and 1 mol of carbon dioxide.

As ratio is 1:2, I will produce the double of moles of water, with the moles of methane I have.

1.320 mol .2 = 2.64 moles

Now, we can convert the moles to mass (mol . molar mass)

2.64 mol . 18g/mol = 47.5 g

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C. The volume will stay the same

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How many moles of NaCl are contained in 50.0 mL of 2.50 M NaCl?

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Answer: 0.144 moles. :)

Explanation:

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3 years ago

Calculate the pressure exerted on the floor when an elephant who weighs 2400 N

Inessa05 [86]

Answer:

The answer is

Explanation:

The pressure exerted by an object given the force of the object and the area can be found by using the formula

$P = \frac{f}{a} \\$

where

P is the pressure

f is the force

a is the area

From the question

f = 2400 N

a = 0.4 m²

So we have

$P = \frac{2400}{0.4} \\$

We have the final answer as

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28° 51' 55" W

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Explanation: its fun

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