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Kobotan [32]
3 years ago
7

During which of the fallowing chemical changes does a precipitate form??

Chemistry
1 answer:
Nikitich [7]3 years ago
4 0
<span>A PRECIPITATE is a solid that forms inside of a mixture.
When we add lemon juice to milk, the lemon juice causes lumps to form inside of the milk. SOLID lumps.
We call them "curds." So, we end up with SOLID curds, formed inside of liquid whey.

if that doesn't help its B</span>
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Benjamina started her walk from the front door of her ground floor apartment.She walked 6 meters to the corner of the building a
Nookie1986 [14]

Answer:

See explanation

Explanation:

The major difference between distance and displacement is that distance is a scalar quantity while displacement is a vector quantity. Scalar quantities have magnitude without direction while vector quantities have both magnitude and direction.

The distance covered by Benjamina in both cases just refer to the difference in her position at each time without reference to the direction in which she changed her position.

Her displacement will clearly mention the direction in which she moved both when she walked to the front door of her apartment and when she walked to a friend's apartment.

8 0
3 years ago
How many protons, neutrons, and electrons are found in a neutral atom of hydrogen -3
Vlada [557]

Answer:

Hydrogen has one proton, two neutrons and one electron.

Explanation:

I hope this helps.

6 0
3 years ago
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Which of the following are characteristics of a gas? (Select all that apply.)
ladessa [460]

Answer:

it has a fixed volume it can also be compressed

Explanation:

a gases molecules don't move slow because they are not solid and are not compacted.

a gas does not have a fixed shape because there is nothing to hold its shape

4 0
2 years ago
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A sample of nitrogen gas, (N2), occupies 45.0 mL at 27.00∘C and 80.0 kPa. What will be the pressure if the gas is cooled to −73.
maxonik [38]

Answer:

The new pressure is 53.3 kPa

Explanation:

This problem can be solved by this law. when the volume remains constant, pressure changes directly proportional as the Aboslute T° is modified.

T° increase → Pressure increase

T° decrease → Pressure decrease

In this case, temperature was really decreased. So the pressure must be lower.

P₁ / T₁ = P₂ / T₂

80 kPa / 300K =  P₂/200K

(80 kPa / 300K) . 200 K = P₂ →  53.3 kPa

6 0
3 years ago
When the temperature of air rises, the amount of water needed for saturation
rusak2 [61]

It increases as temperature rises.

3 0
3 years ago
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