Ah, okay.
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Ah, okay.
Yup its correctI think the answer is C. Check in marking scheme if this is correct. If so, I'll explain what I did.
no problemOMG thank u sooooooooooooooooooooo freaking much!
Yup its correct
Thnx a tonne..i dont undrstnd this typ of prblmes...Okay, here goes:
CO2(g) + H2(g) -> CO(g) + H2O(g)
CO2 is being broken, so instead of -283, we take +283
H2O is being formed, so we use -286
BUT it is being formed in gaseous state, not liquid state, so we also take +44.
283 + 44 - 286 = +41.
So the answer is C.
http://www.xtremepapers.com/CIE/International A And AS Level/9701 - Chemistry/9701_s07_qp_1.pdf
Q no 9 i kinda well not kinda more lyk totally suck @ chem so any help would b lyk really cooooooooooooooooool
PCl5-->PCl3+Cl2
Which equation applies to an ideal gas? (p = pressure, V = volume, M = molar mass, P = density, c = concentration, R = gas constant)
1. p = PRT/M
2. pV = MRT
3. pV = cRT/M
Is the answer d?
A. 1, 2, 3
B. 1, 2
C. 2, 3
D. 1
How?
the ans is D...1 only as Mr = Mass/No of moles... Rearranging the equation , v gt p = P * R* T * n / Mass.Which equation applies to an ideal gas? (p = pressure, V = volume, M = molar mass, P = density, c = concentration, R = gas constant)
1. p = PRT/M
2. pV = MRT
3. pV = cRT/M
A. 1, 2, 3
B. 1, 2
C. 2, 3
D. 1
How?
which question
Yeah sorry x_x :3do you mean theoretical yied by measured yield ?=O
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