Question

questions are all below :)

(sorry about the amount of questions.)

Answer 1

Hello @eunnice !

Welcome to openstudy

Answer 2

It is suggested that you ask one question at a time.

Answer 3

second attachment
it is B
isomer X when broken, it can form either (CH3)2CHCBr3 or (CH3)2CBrCHBr2
Isomer Y when broken, it can either form CHBrCH3CBr2CH3 or CH3CBr2CHBrCH3
but you are looking for three different compounds, in isomer Y products are the same but are reversed.

Answer 4

First attatchment
CH4+2O2-->CO2+2H2O
10 cm^3 reacted with 70 cm^2 but we use only 20 cm^2 and we have got 50cm^3 of O2 unreacted. H2O is in liquid state so it does not count as a residual gas. looking at our equation. we have only 10 cm^3 of CO2 produced. so total of volume of residual gas is 60 cm^3

Answer 5

Third Attatchment
CH3CH2CH3 propane
CH3CH2CH2•+•CH2CH2CH3-->CH3CH2CH2CH2CH2CH3
CH3CH•CH3 + •CH2CH2CH3-->CH3CHCH3CH2CH2H3

Answer 6

fourth Attachment
Metal +Acid-->Salt+Hydrogen
Ca+CH3COOH-->Ca(CH3COO)2
CaC4H6O2 so we eliminate option 1

Answer 7

sorry that's the fifth one

Answer 8

Wow. I can't believe you did all her work for her.

Answer 9

Read this for question related to lattice . http://www.chemguide.co.uk/atoms/structures/ionicstruct.html
believe it or not, i did it :D @abb0t

Answer 10

Ok. Next time do my work too.

Answer 11

sure.