Answer:
200 torr
Explanation:
because it have 250ml when we subtract the 50 we get answer
1 CH4 (g) + 2 O2 (g) -----> CO2 (g) + 2H2O(l) ΔH= - 890 kJ
1 mol 2 mol
1) If ΔH has minus, it means "release". We need only "release" choices.<span>
2) From reaction
1 mol </span>CH4 (g) "releases" ΔH= - 890 kJ - We do not have this choice.
2 mol O2 (g) "release" ΔH= - 890 kJ, so
1 mol O2 (g) "release" ΔH= - 445 kJ
Correct answer is B.
The answer is B, density is d=m/v
I think it’s the frequency? Because it lower his voice when he whistle again
Answer:
Covalent bobd
Explanation:
Chamical bonding between non metals is covalent.
