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Question 227932
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1gm of KCl was dissolved in 130gm
of water rising its boiling point
by 0.1^( Β°) C.calculate the degree of
dissociation of salt expressed as
percentage Kb=0.52C/mole/kg
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Question 227419
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Question 227418
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Question 220583
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Question 212018
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Complete and balance the following chemical reaction
equation
(a)Ca + H_2 O β
(b)BaCl + H_2 SO_4 β
(c)CuSO_4 .5H_2 O β^(Heat strongly)
(d)ZnCO_3 +HCl β
31/1/2024
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A compound M is composed of 52.2%
carbon ,13% hydrogenand the rest
is oxygen.if the molecuar mass of M is 138
(a)The empirical formular
(b)The molecular formular
31/1/2024
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Calculate the root mean square
speed of the molecules of a Helium
gas kept in a gas cylinder at 400K.
[Take R = 8.3 Jmol^(β1) K^(β1) ]
The answer provided is 1.58 kms^(β1)
Please I need help with the solution
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Question 133438
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How long does it take for the disintegration of
(3/(10)) of an atom with radioactive constant Ξ» ?
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Question 92621
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Question 80164
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Question 77891
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Question 44089
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if 1.225 g of KClO_3 are heated.
Calculate the mass of potassium Chloride produced.
Detemine the volume of oxygen obtained at r.t.p
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Question 38478
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Question 35197
