which of the following contains one mole of neutrons>?
Answer
1g of H (1/1)
1g of C (12/6)
2g of Mg (24/12)
2g of Ne (22/10)
Question 2
Question
Ammonia is manufactured from hydrogen and nitrogen in the Haber process.
3H₂(g) + N₂(g) → 2NH₃(g)
If 60 tonnes of hydrogen produces 80 tonnes of ammonia, what is the percentage
yield in the reaction?
Answer
80/170 x 100%
80/340 x 100%
30/80 x 100%
60/80 x 100%
Question 3
Question
What is the structure of Z-1,2-dibromoprop-1-ene?
Answer
Br CH3
C=C
H Br
H CH2Br
C=C
Br H
Br CH2Br
C=C
H H
H CH3
C=C
Br Br
Question 4
Question
Solutions of barium chloride and silver nitrate are mixed together. The reaction that takes place is an example of.........
Answer
Displacement
Neutralization
Oxidation
Precipitation
Question 5
Question
In an experiment carried out at 200oC and 1 atm pressure, 20 cm³of ammonia gas reacted with an excess of heated copper(II) oxide.
3CuO(s) + 2NH₃(g) → 3Cu(s) + 3H₂O(g) + N₂(g)
If all measurements were made at 200oC and 1 atm pressure, what would be the total volume, in cm³, of gaseous products?