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0
votes
Why is it advisable to obtain nitrogen from air instead ammonia?
answered
Aug 18, 2021
in
Chemistry Form 3
nitrogen and its compounds
isolation of nitrogen gas from air
0
votes
In another experiment a gas jar containing ammonia was inverted over a burning splint. What observation would be made?
answered
Aug 18, 2021
in
Chemistry Form 3
nitrogen and its compounds
ammonia
0
votes
The diagram below shows a set-up that can be used to obtain nitrogen gas in an experiment.
answered
Aug 18, 2021
in
Chemistry Form 3
nitrogen and its compounds
laboratory preparation of nitrogen gas
the mole: formulae and chemical equations
0
votes
The grid below shows part of the table. The letter is not the actual chemical symbols of the elements. Study it and use it to answer the question that follows.
answered
Aug 18, 2021
in
Chemistry Form 1
chemical families patterns in properties
structure and bonding
structure of the atom and the periodic table
0
votes
Mr Kigen is the managing director of Mbau furniture ltd. Which has a large, well equipped workshop with expensive machines. The company handles large sums of money. Outline four insurance policies that the company may have
answered
Aug 18, 2021
in
Business Studies Form 2
insurance
0
votes
The vertices of triangle PQR are P(0,0), Q(6, 0) and R(2, 4)
answered
Aug 18, 2021
in
Mathematics Form 2
similarity and enlargement
0
votes
In the 16th century, Shakespeare wrote many plays. (Underlined the adverbial phrase)
answered
Aug 18, 2021
in
Grammar
adverbial phrase
0
votes
Complete each of the following sentences using the appropriate interrogative pronoun.
answered
Aug 18, 2021
in
Grammar
pronouns
interrogative pronoun
0
votes
Ainisha vielezi katika sentensi ifuatayo:
answered
Aug 18, 2021
in
Sarufi na Matumizi ya Lugha
vielezi
0
votes
Eleza mbinu mlumbi anazoweza kutumia ili afanikishe uwasilishaji wa ulumbi
answered
Aug 18, 2021
in
Sarufi na Matumizi ya Lugha
fasihi simulizi
0
votes
“Wamenimaliza… wamenigeuka.” Weka dondoo hili katika muktadha wake.
answered
Aug 18, 2021
in
Kigogo
tamthilia
kigogo
0
votes
Nitrogen gas is used as an inert atmosphere in electric lamps. Explain in terms of structure and bonding why nitrogen gas is so stable .
answered
Aug 18, 2021
in
Chemistry Form 2
chemical families patterns in properties
nitrogen and its compound
0
votes
A student used the setup below to prepare oxygen gas in the laboratory. Study it and answer the questions that follow.
answered
Aug 18, 2021
in
Chemistry Form 1
air and combustion
oxygen gas preparation
0
votes
The diagram below represents the extraction of sulphur by Frasch process
answered
Aug 18, 2021
in
Chemistry Form 3
sulphur and its compounds
occurrence and extraction of sulphur
0
votes
Dilute hydrochloric acid was added to a compound Z of sodium. The solid reacted with the acid to form a colorless solution H and a colourless gas K which formed a white precipitate when bubbled through lime water. Write the formula of:
answered
Aug 18, 2021
in
Chemistry Form 2
carbon and its compounds
0
votes
Draw the structure of a sulphur molecule.
answered
Aug 18, 2021
in
Chemistry Form 2
chemical families patterns in properties
0
votes
Draw the structure of a sulphur molecule.
answered
Aug 18, 2021
in
Chemistry Form 2
chemical families patterns in properties
0
votes
Define the term transition temperature concerning the allotropes of sulphur.
answered
Aug 18, 2021
in
Chemistry Form 2
chemical families patterns in properties
0
votes
The equation below shows the action of heat on three metal nitrates.
answered
Aug 18, 2021
in
Chemistry Form 2
chemical families patterns in properties
0
votes
Chlorine water was exposed to sunlight for a few hours .Colourless gas F was collected in the boiling tube as shown.
answered
Aug 18, 2021
in
Chemistry Form 1
air and combustion
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