8548842
Descripción
Test por elle belle, actualizado hace más de 1 año
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Creado por elle belle
hace alrededor de 7 años
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Pregunta 1
Pregunta
which of the following contains one mole of neutrons>?
Respuesta
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1g of H (1/1)
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1g of C (12/6)
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2g of Mg (24/12)
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2g of Ne (22/10)
Pregunta 2
Pregunta
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?
Respuesta
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80/170 x 100%
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80/340 x 100%
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30/80 x 100%
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60/80 x 100%
Pregunta 3
Pregunta
What is the structure of Z-1,2-dibromoprop-1-ene?
Respuesta
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Br CH3 C=C H Br
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H CH2Br C=C Br H
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Br CH2Br C=C H H
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H CH3 C=C Br Br
Pregunta 4
Pregunta
Solutions of barium chloride and silver nitrate are mixed together. The reaction that takes place is an example of.........
Respuesta
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Displacement
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Neutralization
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Oxidation
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Precipitation
Pregunta 5
Pregunta
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?
Respuesta
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10
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20
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30
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40
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