Chemistry
Chemistry, 11.11.2021 14:00, rhettperkins

PLS HURRY 50 PTS AND BRAINLIEST Which of the following statements represent the law of conservation of mass?

A. The mass of the reactants is not equal to the mass of the products.
B. The mass of the new compounds is not equal to the mass of the materials before the reaction started.
C. The mass of the reactants is equal to the mass of the products.

Why does the system need to be closed to prove conservation of mass?

A. If a system is open that means matter can escape or be introduced.
B. If a system is open gases will not escape.
C. If system is open escaped gases do not change the amount of matter enough to change the amount of mass.

answer
Answers: 2

Other questions on the subject: Chemistry

image
Chemistry, 22.06.2019 09:00, mercymain1014
An excess of lithium oxide undergoes a synthesis reaction with water to produce lithium hydroxide li2o+h2o→2lioh if 1.05 g of water reacted, what is the theoretical yield of lithium hydroxide? a) 5.83 x 10–2 g lioh b) 1.17 x 10–1 g lioh c) 2.79 x 100 g lioh d) 1.40 x 100 g lioh
Answers: 1
image
Chemistry, 22.06.2019 11:30, ansuaprajita1506
Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.
Answers: 3
image
Chemistry, 22.06.2019 15:30, sanchez7489
Draw the lewis dot structure for each of the following polyatomic ions
Answers: 1
image
Chemistry, 22.06.2019 22:30, pookie879
You just calculated that the heat of fusion for chloromethane is 6400 j/mol. the heat of fusion for hydrogen is 120 j/mol.? which of the following account for this difference? more than one correcta. chloromethane can absorb more energy at the same temperature. b. hydrogen has stronger intermolecular forces than chloromethane. c. hydrogen molecules can pack more closely than chloromethane molecules. d. chloromethane experiences dipole-dipole interactions. e. chloromethane has a higher molar mass than hydrogen.
Answers: 3
Do you know the correct answer?
PLS HURRY 50 PTS AND BRAINLIEST Which of the following statements represent the law of conservatio...

Questions in other subjects:

Konu
English, 13.01.2021 01:20
Konu
English, 13.01.2021 01:20