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nekit [7.7K]
3 years ago
10

[Gradpoint-Question AK-4] Which equation represents a combustion reaction?

Chemistry
2 answers:
harina [27]3 years ago
4 0
Would the answer be d wouldn't it

Readme [11.4K]3 years ago
3 0
The answer is D. It's combustion of ethane to carbon dioxide and water (complete combustion).
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How many moles are in 25 grams of dihydrogen monoxide
timurjin [86]
If you'd like the full working, here it is:

I calculated this by using the formula triangle.

Mass

Number Formula
Of moles Mass

To calculate the number if moles in a substance, you need to divide the Mass by the Formula mass. You get the formula mass by adding the atomic masses of the elements in the compound together. In this situation, H2O, it would be two hydrogen molecules plus one oxygen molecule which is 2 + 16. This is because the atomic mass of Hydrogen is 1 and the atomic mass of Oxygen is 16.

Now that we have the Formula mass we can go ahead and do the calculation since we already have the Mass. You do as follows:

Mass divided by Formula mass which is in this case - 25 divided by 18

By doing this calculation you will get the answer which is 1.38 moles which can be rounded to 1.4

Hope this helps :)
6 0
3 years ago
Read 2 more answers
Mike mixes two chemicals in a container. The container quickly becomes very hot.
Kipish [7]
The chemicals are reactive with one another
7 0
2 years ago
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Which is a complex molecule?<br><br> a. H2<br><br> b. Ne<br><br> c. Co<br><br> d. H20
eimsori [14]

Explanation:

d.

h{}^{2} o

3 0
3 years ago
The Universe is composed of...?
exis [7]
A.
everything in existence.
8 0
3 years ago
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Question 1 (Multiple Choice Worth 2 points)
Nookie1986 [14]

The scientific models are used because they allow scientists to make predictions and make it easier for scientists to avoid using data. option A and C is correct.

<h3>What are scientific models?</h3>

The scientific models are those which is given by scientists to allow them to make prediction about anything particular on which they are working or making research for it some examples are plum pudding model for an atom and bohr's model of an atom etc.

The biggest advantage is that scientists do not have to check the given data which are written into books they can perform their experiment and can conclude the data by performing experiment.

Therefore, scientific models are used because they allow scientists to make predictions and make it easier for scientists to avoid using data. option A and C is correct.

Learn more about scientific models, here:

brainly.com/question/1622233

#SPJ1

7 0
1 year ago
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