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Artyom0805 [142]
3 years ago
9

HELP!!!! please omg

Chemistry
1 answer:
OverLord2011 [107]3 years ago
7 0

Answer:

I believe it's A. to reduce air bubbles. Tbh, it's been a while

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Which of the graphs below might represent a mixture of pure water and ice exposed to a room temperature of 3°C?
Y_Kistochka [10]

Answer:

C. Graph C  

Explanation:

We have a mixture of water and ice.

At 0 °C they are at equilibrium.

water-to-ice rate = ice-to-water rate

Next, we lower the temperature to -3 °C — just slightly below freezing.

The water will slowly turn to ice.  

The water-to-ice rate will be slightly faster than the ice-to-water rate.

The purple bar will be slightly higher than the blue bar.

Graph C best represents the relative rates

A. is wrong. The ice-to-water rate is faster, so the water is melting. The temperature is slightly above freezing (say, 3 °C).

B. is wrong. The two rates are equal, so the temperature is 0 °C.

D. is wrong. The water-to-ice rate (freezing) is much greater than the ice-to-water rate, so the temperature is well below freezing( say, -10 °C).

6 0
4 years ago
The final temperature and pressure in a container is 234K at 210 kPa.
andre [41]

Answer:

Initial pressure = 157 kpa (Approx)

Explanation:

Given:

final temperature = 234 K

final pressure = 210 kpa

Initial temperature = 175 K

Find:

Initial pressure

Computation:

Initial pressure / Initial temperature = final pressure / final temperature

Initial pressure / 175 = 210 / 234

Initial pressure = 157 kpa (Approx)

5 0
3 years ago
Will combining water and baking soda make a chemical reaction?
Mashcka [7]

Answer:

The baking powder reacts with water to produce bubbles, while baking soda does not react with water.

Explanation:

8 0
3 years ago
Read 2 more answers
PLEASE HELP FIRST GETS BRAINLIEST
NemiM [27]

Answer: I'm going to guess and say it is h2 or o2 I am not sure.

Explanation:

3 0
3 years ago
Which of the following is an nonmetal?<br> A. He<br> B. Re<br> C. Cu<br> D.Hg
tatyana61 [14]
The answer is B.) Re, which stands for Rhenium.
3 0
3 years ago
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