Inorganic Chemistry Answers

A 250 centimeters cube flask contain Krypton at 500mmHg and 450 centimeters cube flask contain helium at 950mmHg. The content are mixed by opening a stock cup connecting them, assuming all all operations are carried out a constant temperature and the volume of the stock cup is negligible. Calculate the partial pressure of each gases in the mixture.

2 g of benzoic acid is dissolved in 25 g of benzene,shows a depression in freezing point equal to 1.62 K. Kf for benzene is 4.9 K kg mol^-1. What is percentage association of benzoic acid if it forms dimer in benzene?

determine the amount cu2s at 85% we need to obtain 1 kg of cuobif the yield of tje reaction is 92%

Why aluminum hardly react with hydrochloric acid? and what is the purpose of mineral wool?

Name the process that is employed to refine aluminium.

the discovery of ---------- rejected law of octave..
A. Halogens
B. Inert gases
C. Alkali Metals
D. Heavy metals

How many molecules of iron sulphate are in 250ml of the solution?
How many ions fe3+ does the 50ml solution contain?

a sample of gas containing 1.50 moles of neon has a volume of 8.50l. what will be the volume of the sample of gas if a leak allows one half of the neon atoms to escape?

Given the thermochemical equations

X
2
+
3
Y
2
⟶
2
XY
3
Δ
H
1
=
−
340
kJ

X
2
+
2
Z
2
⟶
2
XZ
2
Δ
H
2
=
−
140
kJ

2
Y
2
+
Z
2
⟶
2
Y
2
Z
Δ
H
3
=
−
240
kJ

Calculate the change in enthalpy for the reaction.

4
XY
3
+
7
Z
2
⟶
6
Y
2
Z
+
4
XZ
2

For a reaction X + 2Y ------> Z . The amount of Z formed by stating the reaction with 5 moles of X and 8 moles of Y.