13 Answered Questions for the topic Chemical Changes

Chemical Changes

03/27/18

What is the overall energy change if 1,500 g of N2 are reacted to make ammonia?
Overall energy changes
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04/02/16

how can i work out to find the correct answer ? can you please explain
According to the following reaction, how many grams of bromine will be formed upon the complete reaction of 30.1 grams of bromine trifluoride?bromine trifluoride (g) bromine (g) + fluorine (g)
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02/09/16

Name of solid produced by the reaction ammoniacal sliver nitrate with carbonyl compound
What is the name of the solid that is formed when ammoniacal silver nitrate reacts with a carbonyl compound?   need help please 
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02/08/16

Reaction of amines
Describe the  reaction of phenyl amine with ethanoyl chloride.
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02/08/16

Amines and it's strengths
Comment on the relative base strengths of the different nitrogen containing compounds. Can you explain why phenyl amine has a lower base strength than the other compounds? (Define a base; this... more
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02/08/16

Reactions of amines why butyl amine has a smell
Describe the smell of butyl amine. Can you explain why butyl amine has this smell?
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02/08/16

skeletal equation of carboxylic reactions
Write a skeletal equation for the reaction of ethanoyl chloride with phenyl amine (represented as R-NH2). What is the chemical term for the bond formed between the two reagents? What term might... more
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02/08/16

Reactions of Carboxylic acids
Compare the reactions of ethanoic acid and ethanoyl chloride with ethanol. Explain the differences in their reactions.
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02/08/16

Equation for carboxylic acids and their derivatives
Write an equation for the reaction of ethanoic acid with sodium carbonate. How does this reaction compare with that of hydrochloric acid with sodium carbonate?   They look into: What does this... more
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02/08/16

Equation for carboxylic acids and their derivatives
Write an equation for the reaction of PCl5 with ethanoic acid:   and    How might testing pH followed by the reaction with PCl5 be useful in an analysis of an unknown organic compound?
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Chemical Changes Science Chemistry Word Problem

02/19/15

The pressure exerted by a gas is 38.0 atm while it has a volume of 350 cm3. What would be the volume of this sample of gas at standard atmospheric pressure?
The pressure exerted by a gas is 38.0 atm while it has a volume of 350 cm3. What would be the volume of this sample of gas at standard atmospheric pressure?   must show units, and must be rounded... more
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Chemical Changes Chemistry Chemistry Homework

11/24/14

Homework Help (Chemistry)
A) A sample of SO2 contains 1.98*10-3 moles. How many mL will it occupy? The density of the gas is 2.168g/L. B)If the density of SO2, were to increase because the temperature decreased, would the... more
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Chemical Changes

07/18/14

help with chemical change
I am suppose to pick the possible answers that show examples of chemical change in matter   a.  burning wood until it becomes ashes b.  combining nitrogen and oxygen gases to make ammonia... more
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