0.031
0.125
0.640
1.560
Correct answer is B
No explanation has been provided for this answer.
3.75 dm\(^3\)
7.59 dm\(^3\)
15.0 dm\(^3\)
30.0dm\(^3\)
Correct answer is C
1 mole of methane reacts with 2 moles of oxygen
1 vol of methane reacts with 2 vol of oxygen
: 7.5 vol of methane will yield 15 vol of oxygen in dm\(^3\)
3P
2P
\(frac{3}{2}\) P
\(frac{2}{3}\) P
Correct answer is C
No explanation has been provided for this answer.
0.004 mol dm(^-3\)
0.020 mol dm(^-3\)
0.200 mol dm(^-3\)
0.400 mol dm(^-3\)
Correct answer is A
 |
= | initial molarity |
 |
= | initial volume in liters |
 |
= | final molarity |
 |
= | final volume in liters |
0.200 X 5.00 = M\(_2\) X 250
M\(_2\) = 1 / 250
M\(_2\) = 0.004 mol dm(^-3\)
Which of the following standard conditions is not correct about energy changes?
Standard temperature is 298K
Standard pressure is 1 atm
Concentration of solution must be 1 mol/dm\(^3\)
ΔH at 298 K is the activation energy
Correct answer is D
The standard conditions of 1 atm pressure and 298K.
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