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Chemistry: Post your doubts here!

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Yup its correct

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. :)
 
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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. :)
Thnx a tonne..i dont undrstnd this typ of prblmes...:notworthy:
 
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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?
 
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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?
the ans is D...1 only as Mr = Mass/No of moles... Rearranging the equation , v gt p = P * R* T * n / Mass.
we know density = mass/ volume..so d/m = 1/volume...
Rearranging it once agn, v gt ...pv = nRT
 
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