3 years ago

I need help on this

Chemistry

1 answer:

sasho [114]3 years ago

3 0

Answer: Y and Z. It's D.

Explanation: W represents evaporation, which is a physical change. X represents dissolving, which is also a physical change. If X and W aren't chemical changes, then Y and Z must be if half of the choices are.

You might be interested in

What is true when a reaction has reached equilibrium?

jolli1 [7]

Answer:

Explanation:

The rate of the forward reaction is less than the rate of the reverse reaction. ... The reaction rates of the forward and reverse reactions are equal

4 0

3 years ago

What does a low number on the pH scale say about a solution? O A. The solution is changing, OB. The solution is an acid. O C. Th

Amanda [17]

Answer: B) The solution is an acid.

Explanation:

5 0

3 years ago

Read 2 more answers

Nonmetal halogen family atmoic mass 35

Anettt [7]

chlorine has the atomic mass of 35.5 and is a non metal in the halogen family

5 0

3 years ago

A gas that exerts a pressure of 537 torr in a container with a volume of 5.30 L will exert a pressure of 255 torr when transferr

ArbitrLikvidat [17]

Answer:- The gas needs to be transferred to a container with a volume of 11.2 L.

Solution:- From Boyle's law. "At constant temperature, Volume is inversely proportional to the pressure."

It means, the volume is decreased if the pressure is increased and vice versa.

Here, the Pressure is decreasing from 537 torr to 255 torr. So, the volume must increase and calculated by using the equation:

$P_1V_1=P_2V_2$

Where, $P_1$ is initial pressure and $P_2$ is final pressure. Similarly, $V_1$ is initial volume and $V_2$ is final volume.

Let's plug in the values in the equation:

(537 torr)(5.30 L) = (255 torr)( $V_2$ )

$V_2=(\frac{537 torr*5.30 L}{255 torr})$

$V_2$ = 11.2 L

So, the new volume of the container needs to be 11.2 L.

4 0

3 years ago

Another way to say reactants is Question 4 options:

Mamont248 [21]

Answer:

I think the answer is B or Compounds

3 0

3 years ago