4 years ago

Please help!!!!!!!!! ASAP!!!

Chemistry

1 answer:

Ad libitum [116K]4 years ago

4 0

Answer:

0.00505

Explanation:

You can google the answer or try to learn how to convert it

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28. The formula for magnesium nitride is____.<br> a. MgN<br> b. MgN3<br> c. Mg3N2<br> d. Mg2N3

oksian1 [2.3K]

Answer:

Explanation:

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3 years ago

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What is avogrados number and why is it useful

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Answer:

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3 years ago

The heat of combustion of ethane is -337.0kcal at 25 degrees celsius. what is the heat of the reaction when 3g of ethane is burn

Ghella [55]

Answer:

Q = -33.6kcal .

Explanation:

Hello there!

In this case, according to the equation for the calculation of the total heat of reaction when a fixed mass of a fuel like ethane is burnt, we can write:

$Q=n*\Delta _cH$

Whereas n stands for the moles and the other term for the enthalpy of combustion. Thus, for the required total heat of reaction, we first compute the moles of ethane in 3 g as shown below:

$n=3g*\frac{1mol}{30.08g}=0.1mol$