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jek_recluse [69]
2 years ago
13

Explain, in terms of energy changes, why methane is used as a fuel.

Chemistry
1 answer:
Alik [6]2 years ago
4 0
It puts gas in your car
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What is the mass of 8.12 × 10^23 molecules of CO2 gas? (Atomic mass of carbon = 12.011 u; oxygen = 15.999 u.)
amid [387]

Answer:

m=59.3gCO_2

Explanation:

Hello,

In this case, the first step is to compute the molar mass of carbon dioxide as shown below, considering it has one carbon atom and two oxygen atoms:

M=12.011g/mol+2*15.999g/mol\\\\M=44.009g/mol

It is important to notice it is the mass in one mole of such compound. Afterwards, we need to use the Avogadro's number to compute the how many moles are in the given molecules of carbon dioxide as shown below:

mol=8.12x10^{23}molec*\frac{1mol}{6.022x10^{23}molec} =1.35mol

Finally, the mass by using the molar mass:

m=1.35mol*\frac{44.009g}{1mol} \\\\m=59.3gCO_2

Best regards.

4 0
2 years ago
According to the reaction below, what mass of oxygen gas is required to produce 22 g of carbon dioxide?
alisha [4.7K]
The answer is B)4.0g
6 0
3 years ago
What do you think is responsible for the color produced in the flame, the metal atom or what is attached to the metal atom?
zlopas [31]

Answer:

metal Atom

Explanation:

every transition metal atom are responsible for the flame color. Some metal are also confirmed by flame test.

7 0
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Which of the following is a reason that a scientist would want to use a model to study DNA? A. DNA may not really exist
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I think it is D but i'm not sure

hope I helped :)

7 0
2 years ago
Why did the thirteen American colonies want to purchase goods from the West Indies? A.The West Indies were the only places that
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b

Explanation:

3 0
2 years ago
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