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Chemistry Questions and Answers
0
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11
answers
why are atoms said to be electrically neutral?
answered
12 hours
ago
in
Chemistry Form 2
by
0702089XXX
structure of the atom and the periodic table
0
votes
2
answers
State Hess’s law.
answered
3 days
ago
in
Chemistry Form 4
by
0718200XXX
energy changes in chemical and physical processes
0
votes
0
answers
answer the following questions
asked
Mar 22
in
Chemistry Form 2
by
0713784XXX
structure and bonding
0
votes
0
answers
carbon (iv) oxide sublimes at (-78°c)it is called dry ice (a)Why it is called dry ice (b)it is used for keeping ice-cream cold.why it is preferred over ordinary ice? (c)Name other 3 substance that behave like dry ice
asked
Mar 22
in
Chemistry Form 1
by
0713784XXX
simple classification of substances
0
votes
0
answers
describe how you can obtain pure crystal of calcium chloride from a mixture containing aluminium chloride, calcium chloride and lead ( ll) chloride
asked
Mar 22
in
Chemistry Form 1
by
0713784XXX
simple classification of substances
0
votes
2
answers
Write a balanced equation of the reaction between Sodium Chloride and Fluorine
answered
Mar 21
in
Chemistry Form 2
by
0727658XXX
structure of the atom and the periodic table
0
votes
4
answers
Formular for easily memorizing the periodic table
answered
Mar 21
in
Chemistry Form 2
by
0727658XXX
structure of the atom and the periodic table
0
votes
3
answers
balance the following.
answered
Mar 21
in
Chemistry Form 2
by
0727658XXX
structure of the atom and the periodic table
0
votes
3
answers
A piece of phosphorus was burnt in excess air and dissolved in hot water. Write an equation for the burning of phosphorus in excess air
answered
Mar 21
in
Chemistry Form 1
by
0759712XXX
water and hydrogen
0
votes
0
answers
what is a mole
asked
Mar 20
in
Chemistry Form 3
by
0719355XXX
the mole: formulae and chemical equations
0
votes
21
answers
What are the uses of oxygen?
answered
Mar 20
in
Chemistry Form 1
by
0759712XXX
air and combustion
0
votes
36
answers
What is a drug?
answered
Mar 20
in
Chemistry Form 1
by
0759712XXX
introduction to chemistry
what is drug
0
votes
9
answers
which method of separation can be used to separate benzoic acid and potassium carbonate
answered
Mar 20
in
Chemistry Form 1
by
0759712XXX
simple classification of substances
0
votes
4
answers
state the chemical test for presence of water
answered
Mar 20
in
Chemistry Form 1
by
0759712XXX
air and combustion
0
votes
0
answers
ostward process
asked
Mar 18
in
Chemistry Form 3
by
0702797XXX
nitrogen and its compounds
0
votes
0
answers
define molar gas volume
asked
Mar 17
in
Chemistry Form 3
by
0740458XXX
the mole: formulae and chemical equations
0
votes
2
answers
In an experiment,60 cubic cm of oxygen diffused a porous pot in 10seconds and 100 cubic cm of chlorine diffused the same porous pot in 30seconds. If density of oxygen is 1.25 calculate density of chlorine
answered
Mar 6
in
Chemistry Form 3
by
easyadmin
gas laws
0
votes
2
answers
What is the bond between the the molecules of ammonia
answered
Feb 19
in
Chemistry Form 2
by
0672048XXX
structure and bonding
0
votes
2
answers
What is isotopy?
answered
Feb 19
in
Chemistry Form 2
by
0672048XXX
structure of the atom and the periodic table
0
votes
1
answer
Starting with sodium oxide, describe how a sample of crystals of sodium hydrogen carbonate may be prepared
answered
Feb 17
in
Chemistry Form 2
by
easyadmin
salts
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