E 12. A physical property that incr
the periodic table is
A. atomic radius B. metallicity
C. ionic radius
D. electron affinity
13. a Arg) + bB () - 4 Go + y Hg)
The equilibrium constant of the above reaction at
constant temperature is
[G][H]
[G]* H)
A.
B
(A]B]
[A] [B]
[HI
[G]
C.
D
[A] [B]
[A1" B
ed by
8 when
14. The average kinetic energy of the molecules of a gas
A decreases with a decrease in pressure​

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o