Which of the following best describes an atom? select one: a. consists of elements b. consists of compounds c. biggest unit of a compound d. smallest unit of an element

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?

What information does a complete ionic equation give that the balanced equation doesn’t show?

Scientists are often interested in knowing the molar heat of combustion – the heat released during the combustion of one mole of a substance. use the periodic table to find molar masses. how many moles of ethanol are present in the sample?