Question

some last minute doubts for my exam:
:)) do help

Answer 1

1.Which law helps to assign molecular formula for a compound?
2.write a note on hydrogen spectrum?(2 mark question what should i write?)
3.what we mean by negative electron gain enthalpy and +v3 electron gain enthalpy?
4.why el- gain enthalpy of Flourine less than Cl?what about F and Oxygen?
What about Be and Boron?
5.Compare stability of O2 and O2-
6.DESCRIBE ORBITALS FOR BELOW
A)N=1,L=0
B)N=2,L=1,M=0
8)draw shapes of orbitals with n=2 and l=1
9)find no: of oxygen atoms in 4g of O2
should we multiply by two at the end???
10)3g hydrogen react with 33 g O2 to form water.what is limiting reagent?
how much H20 is formed?
11)what mass of CO2 is required to completely react with 25 ml of .75 M HCL??
CaCO3+2HCL==CO2+H20+CACL2

Answer 2

you don't want me trying to answer those...Unless you like failing :p