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If the temperature changes in a chemical reaction, What has occurred?

A. There was no energy transfer.

B. Energy was transferred

C. Energy was destroyed

D. Energy was created

What role did sulfuric play in the ester hydrolysis reaction? a. it reduced the reactivity of the starting material. b. it increased the ph of the solution. c. it behaved as a catalyst. d. it behaved as the nucleophile?

The number of Joules needed to raise the temperature of 10 grams of water from 20°C to 30°C is

The atoms of gold would be the same as the atoms of iron and have the same properties. True or false?

Which of the following could be said about ecological footprints? A. Exact ecological footprints are often difficult to calculate, but estimates can be useful in comparing populations. b.

How many grams of nh3 can be produced from 4.08 mol of n2 and excess h2. express your answer numerically in grams?

It's Peggy Sue's birthday and she's about to blow out the candles on her cake. Brother Roger stops the party when he shouts: "Look at that! Chemical and physical changes taking places on your birthday cake!

When aluminum, Al, metal is dipped in an aqueous solution of hydrochloric acid, HCl, hydrogen gas, H2, is produced with the formation of an aluminum chloride, AlCl3, solution.

What are the advantages of using solar energy

Which of the following has the highest critical temperature? H2 N2 NH3 H2O

Are there any good tips for organic chemistry reactions?