Chemistry, 26.09.2021 23:20 davidleew24

Sandy heated 20 grams of liquid hydrogen peroxide until it was completely broken down into liquid water and oxygen gas. Which of these best describes the total mass of water and oxygen that was produced? A more than 20 grams since heat was added
B 20 grams since no matter was added or removed
C less than 20 grams since oxygen gas is very light
D more than 20 grams since there are two new substances

Answers: 1

Show answers

Other questions on the subject: Chemistry

Chemistry, 21.06.2019 20:30, Kaylinne1181

This chart represents the melting point of several substance. what besy explains the high melting point of the salt?

Answers: 2

continue

Chemistry, 22.06.2019 07:30, bbyniah123

11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg

Answers: 3

continue

Chemistry, 23.06.2019 00:10, Rubendelarosa1529

Covalent compounds: mastery test select the correct answer what is formed when atoms join together with a covalent bond? a. an ion b. a molecule c. a neutral atom d. a noble gas

Answers: 3

continue

Chemistry, 23.06.2019 01:40, mandilynn22

Calcium carbonate decomposes at high temperatures to give calcium oxide and carbon dioxide as shown below. caco3(s) cao(s) + co2(g) the kp for this reaction is 1.16 at 800°c. a 5.00 l vessel containing 10.0 g of caco3(s) was evacuated to remove the air, sealed, and then heated to 800°c. ignoring the volume occupied by the solid, what will be the mass of the solid in the vessel once equilibrium is reached?

Answers: 1

continue

You know the right answer?

Sandy heated 20 grams of liquid hydrogen peroxide until it was completely broken down into liquid wa...