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MaRussiya [10]
3 years ago
9

WILL MARK BRAINLIEST IF YOU ANSWER EVERY QUESTION!!!!

Chemistry
1 answer:
Savatey [412]3 years ago
4 0

Answer:

The answer for number one is .A

The answer for number two is heat rises

Explanation:

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What is the empirical formula of a substance that is 53.5% C, 15.5% H, 31.1% N?
KengaRu [80]
For each carbon, hydrogen and nitrogen. You have to divide each percentage by its atomic mass.
C = 53.5/12.0107 = 4.45436
H = 15.5/1.00794 = 15.377899
N= 31.1/14.0067 = 2.220365

Round the number to significant figures
C = 4.45
H =15.4
N =2.22

Divide Each Number by the smallest number out of the three
so N = 2.22/2.22 =1
H = 15.4/2.22= 6.9 =7
C = 4.45/2.22= 2
So the Formula Should Be <span>C2H7N</span>
7 0
3 years ago
How does a fire extinguisher stop a combustion reaction?
tensa zangetsu [6.8K]

Answer:

In the heat of a fire, it releases a cloud of carbon dioxide that smothers the fire. That is, the gas drives oxygen away from the fire, thus stopping the chemical reaction.

7 0
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Natalija [7]

Explanation:

I don't think a decomposer and detritvore would compete with each other because decomposers job is to break down dead, organic materials and detritvores feed on dead organisms

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I need help with this problem.
seropon [69]
Ok hm lets see well  Simplify <span>2.6x 10<span>2.6×10</span></span> to <span>26<span>26</span></span>
<span><span>26-6^m<span>26−<span>6<span>​m</span></span></span></span><span><span>​​</span></span></span>
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1.Beginning with the new moon, place the phases of the moon in order. Identify each phase.
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