m |
32g/mol |
m |
48g/mol |
m |
32g/mol |
m |
48g/mol |
故答案为:3:2;1:1;3:2;
(2)温同压下,气体摩尔体积相同,根据N=
V |
Vm |
V |
Vm |
(3)氧气的摩尔质量为M=
m |
n |
ag | ||
|
a•NA |
b |
cg |
M |
cg | ||
|
22.4bc |
a•NA |
故答案为:
22.4bc |
a•NA |
(4)该浓H2SO4的物质的量浓度为:
c=
1000mL/Lρω |
M |
1000×1.84×98% |
98 |
=18.4 mol/L.
据稀释定律得:100 mL×1 mol/L=18.4 mol/L×V,
得V=5.4 mL,故答案为:5.4mL.