A sample of hydrated magnesium sulfate has a mass of 4.052 g. After it is heated, it has a mass of 1.979 g. What is the percentage by mass of water in the hydrate?

For the reaction 6CO2 (g) + 6H2O (l) > C6H12O6 (s) + 6O2 (g), what mass, in grams, of glucose is produced from 3.00 moles of carbon dioxide?

Are usually solid shiny and conductive object

Antonym for tempestuous

Molar mass is measured in units of what?

An empty plastic bottle is sealed in a cool room and then moved to a very hot room. What can best be stated about the air pressure inside the bottle when the bottle reaches room temperature? A.

How does th composition of a mixture of hydrogen and oxygen differ from the composition of a compound containing hydrogen and oxygen?

You are asked to prepare 500 mL 0.250 M acetate buffer at pH 5.00 using only pure acetic acid (MW=60.05 g/mol, pKa=4.76), 3.00 M NaOH, and water. Answer the questions regarding the preparation of the buffer. 1.

Which direction do electrons move in when metals react with non-metals?

Hen an electric current passes through liquid water, hydrogen gas passes accumulates at one electrode and oxygen accumulates at the other. Which of the following is true? A) A physical change has occurred, with energy is being absorbed.

Explain what happens to water when heat energy is absorbed a. Ice melts b. Liquid water freezes c. Water vapor condenses