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Ludmilka [50]
3 years ago
8

I'll reward brainliest to whoever can answer this question. :-)

Chemistry
1 answer:
Nat2105 [25]3 years ago
7 0

Answer:

A B and C

Explanation:

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Dana is trying to determine if an unknown sample is a pure substance or not. The sample has a cloudy white color, and it seems e
Firdavs [7]

Answer:

Dana filtered the sample and larger granules of the sample were left behind.

Explanation:

If a substance is pure, it will have a uniform composition throughout. It will not separate into particles of various sizes.

One of the characteristics of pure substances is that they are homogeneous. A mixture is definitely made up of particles of various sizes.

Since the particles was filtered and larger granules were left behind, the sample has been separated by a physical method (filtration). Only a mixture can be separated by physical methods. It is not a pure substance.

5 0
3 years ago
i need to refill my helium tank which holds 2.5 liters, what in grams do I need to order the supplier?​
Viktor [21]

answer: 2,500 grams

explanation:

1 liter = 1000 grams

simply multiply 2.5 liters*\frac{1000 grams}{1 liter} = 2,500 grams

6 0
3 years ago
Sun.<br> What planet is famous for the beautiful rings that surround it?
laiz [17]

Answer:

Saturn. Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter. It is a gas giant with an average radius of about nine times that of Earth. It only has one-eighth the average density of Earth; however, with its larger volume, Saturn is over 95 times more massive.

5 0
3 years ago
Read 2 more answers
Water is stored where until it is used by the cell
Vadim26 [7]

Answer: The water Inside the cell is stored inside the vacuole(s)

Explanation:

Hope this helps :)

3 0
3 years ago
Why aren't hydrogen fuel cells currently available to the public​
Romashka-Z-Leto [24]

Answer:

they require more testing in real-word conditions

Explanation:

One of the biggest reasons for this very slow uptake of hydrogen vehicles is the existing infrastructure. ... The sceptics' first argument against hydrogen vehicles is that they're less efficient than EVs are. Because hydrogen doesn't occur naturally, it has to be extracted, then compressed in fuel tanks.

8 0
3 years ago
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