The answer would be a. C2H4(ethylene)
1C2H4+3O2~>2CO2+2H2O
The first one is correct cause first of all it's atomic number is 7 and second of all it's atomic mass is about 15
I think it might be D or B
And my other two might be A or C
The
correct answer is A. In the combined gas law, if the volume is decreased and
the pressure is constant, then the temperature decreases.
<span>P1V1/
T1 = P2V2 / T2</span>
<span>Assume
the volume decrease by half; V2 = V1/2</span>
<span>P1V1/
T1 = P2V1 /2 T2</span>
<span>Cancelling
terms,</span>
<span>1/T1
= 1/2 T2</span>
T2
= T1/2
<span>Thus,
the temperature decreased.</span>
