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.

Answers: 2

Show answers

Another question on Chemistry

Chemistry, 22.06.2019 22:30

Vi limitens. vastery test select the correct answer. which statement explains why large atoms are more reactive than small atoms? a. large atoms have valence electrons farther from the nucleus and lose them more readily. b. large atoms have greater ionization energy, which they can utilize during a reaction. c. large atoms have a greater number of electrons that they can lose during a reaction. d. large atoms have more energy levels, so they have more energy to pass on in a reaction. reset next

Answers: 3

Answer

Chemistry, 22.06.2019 23:30

To find the work done, the force exerted and distance moved are multiplied. a couch is moved twice before you are happy with its placement. the same force was used to move the couch both times. if more work is done the first time it is moved, what do you know about the distance it was moved? a) when more work was done, the couch was moved the same distance. b) when more work was done, the couch was moved less. c) when more work was done, the couch was moved further. d) when more work was done, the couch wasn't moved at all.

Answers: 1

Answer

Chemistry, 23.06.2019 02:00

Butane gas reacts with oxygen gas to give carbon dioxide gas and water vapor (gas). if you mix butane and oxygen in the correct stoichiometric ratio, and if the total pressure of the mixture is 390 mmhg, what is the pressure (in mmhg) of water vapor after the reaction is completed (temperature and volume do not change).

Answers: 2

Answer

Chemistry, 23.06.2019 06:20

Examine the false statement. compounds are the smallest unit of an element that occur most commonly in nature. select the rewording of the statement that is true. a: atoms are the smallest unit of an element that commonly occur in nature. b: molecules are the smallest unit of an element or compound that commonly occur in nature. c: molecules are the smallest unit of a compound that occur on the periodic table. d: compounds are the smallest unit of an element that occur on the periodic table

Answers: 1

Answer

You know the right answer?

PLS HURRY 50 PTS AND BRAINLIEST Which of the following statements represent the law of conservatio...

Questions