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because it is a weak acid -weak acids form equilibriumshow do u knw its in equilibrium?
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because it is a weak acid -weak acids form equilibriumshow do u knw its in equilibrium?
anytime ^_^Okay, got it. Thanks. =^.^=
Here use d eqn pv = nRT, u know the pressure = 101kPahttp://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s08_qp_1.pdf
Q6..plz help me out with this one..
Hey guys need help with this!!
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I don't see any..Hey guys need help with this!!
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solved... thxxxyou still have this problem or its solved now...???
aoa wr wb!Hey guys need help with this!!
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answer?Hey guys need help with this!!
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since the enthalpy change of formation of 2 moles of iron(III) oxide is -1648 the standard enthalpy change of formation of 1 mole of iron(III) oxide will be the half which is BSkiers trapped by snowstorms use heat packs to keep warm. The heat may be generated by the
reaction below.
4Fe(s) + 3O2(g) → 2Fe2O3(s) ; ∆HO = –1648kJ
What is the standard enthalpy change of formation of iron(III) oxide?
A 0kJmol–1
B –824kJmol–1
C –1648kJmol–1
D –3296kJmol–1
helppppppppppppppppppppppppp!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
oh my gosh,you explained it so well! Thankyou!!!!Oxidation no. of N is -3.
Oxidation no. of H is +1.
Oxidation no. of O is -2.
Sum of oxidation no.s in a compound must equal zero.
When you calculate it, C is the only option.
Because, look:
NH4ClO4 -> -3+4+x-8=0
-> 1+x-8=0
-> -7+x=0
->x=7
Skiers trapped by snowstorms use heat packs to keep warm. The heat may be generated by the
reaction below.
4Fe(s) + 3O2(g) → 2Fe2O3(s) ; ∆HO = –1648kJ
What is the standard enthalpy change of formation of iron(III) oxide?
A 0kJmol–1
B –824kJmol–1
C –1648kJmol–1
D –3296kJmol–1
helppppppppppppppppppppppppp!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
OMG thank u sooooooooooooooooooooo freaking much!since the enthalpy change of formation of 2 moles of iron(III) oxide is -1648 the standard enthalpy change of formation of 1 mole of iron(III) oxide will be the half which is B
http://www.xtremepapers.com/CIE/International A And AS Level/9701 - Chemistry/9701_w06_qp_1.pdf
question 9 Plzzz......
thnks in advnce....
delta H thetaWhat on Earth is "∆HO"?
delta H theta
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