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Chemistry: Post your doubts here!
For 11, n has to be the number of bonds in the compound. For example, the bond energy of a C-H bond is found by divided the enthalpy of formation of CH4 by 4, because there are 4 C-H bonds in CH4. -
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Chemistry: Post your doubts here!
That's not a couple! Anyway, for the first: you're taking the Kc for the reverse reaction, so you'll take the reciprocal of the forward reaction. Then, look at reaction II, and you'll see that all the moles have been divided by 2. Therefore you take the square root of the reciprocal of the Kc... -
Chemistry: Post your doubts here!
You'll have to draw an ICE chart for the equations in A, B, C and D. Here's the one for B: -
Chemistry: Post your doubts here!
I'm trying to work it out but I'm not getting any of the options! Wait a bit, I'll post up the answer in a while, after I figure it out. -
Chemistry: Post your doubts here!
2 C-Cl bonds and 6 C-H bonds (because there are 2 CH3 groups and each group contains 3 C-H bonds; draw a displayed formula if it still isn't clear). -
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Chemistry: Post your doubts here!
B's dipole is 6 multiplied by the dipole of C-H, whereas C's dipole is 2 multiplied by the dipole of C-Cl. -
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Chemistry: Post your doubts here!
Construct the balanced equation for the reaction between N2 and H2. 120-96 kg of H2 is used. Use mole ratios. -
Chemistry: Post your doubts here!
Can't see the question because your link doesn't work. -
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Chemistry: Post your doubts here!
In symmetrical molecules, dipoles cancel out. -
Chemistry: Post your doubts here!
Sorry, I didn't read the question properly. It's to be done this way: -
Chemistry: Post your doubts here!
9 is to be done the same way. Draw an ICE chart and add up the equilibrium moles. -
Chemistry: Post your doubts here!
15. In the equation for the decomposition of a Group II metal nitrate, the metal nitrate and the metal oxide have a mole ratio of 1:1. So (mass of nitrate)/(molecular mass of nitrate)=(mass of metal oxide)/(molecular mass of metal oxide). The mass of nitrate is given to be 2 grams. The mass of... -
Chemistry: Post your doubts here!
Find the molecular mass of butanone, butanoic acid and 2-methyl propanoic acid. Then find the yield using actual mass/calculated mass x 100. Choose the options whose yield = 62 %. -
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Chemistry: Post your doubts here!
22. Ethyl propanoate will give ethanol and sodium propanoate when hydrolysed with NaOH. Find the molecular masses of both, and then find the % by mass. For example, to find the % by mass of ethanol, do (mass by ethanol)/(mass of ethanol + sodium propanoate). 23. Yes, but you have to take into...