Homework Answers
9)
Salt of alkali metals are soluble
So, Li2SO4 is soluble
BaSO4is not soluble
Salt of alkali metals are soluble
So, Na2SO4 is soluble
Se2- and Br- are anion.
They will not form compound.
Answer: b
10)
Given:
V = 20.8 L
n = 3 mol
T = 20.0 oC
= (20.0+273) K
= 293 K
use:
P * V = n*R*T
P * 20.8 L = 3 mol* 0.08206 atm.L/mol.K * 293 K
P = 3.4678 atm
= 3.4678 * 760 mmHg
= 2.63*10^3 mmHg
Answer: c
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