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Inessa05 [86]
3 years ago
6

I’ll mark brainliest lol

Chemistry
2 answers:
maks197457 [2]3 years ago
5 0

Answer:

D

Explanation:

Novay_Z [31]3 years ago
3 0

Answer: Angelica’s

Explanation: rocks are large and sand has very small particles. Sifting separates large objects from smaller ones easiest so the sand with go through whilst the rocks will be left behind. In the other examples, both of the substances are small so it would be much harder to separate them as they can both be sifted through.

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A student collected the data shown in the table below during an experiment.
pentagon [3]

Answer: The answer is C.  A mercury thermometer is better to measure very small changes in temperature.

Explanation:

i took this quiz and this is the answer .

A) A mercury thermometer can measure the freezing point of a liquid that freezes at −80 °C.

B) An alcohol thermometer can measure the boiling point of a liquid that boils at 80 °C.

C) A mercury thermometer is better to measure very small changes in temperature.

D) An alcohol thermometer is better to measure the boiling points of colorless liquids.

3 0
4 years ago
Hi question, what number should I change the 9 to so it's balanced?
Delicious77 [7]

Answer:

3

Explanation:

6 0
3 years ago
If the Ksp of NaCl is experimentally determined to be 53.9, then what is the concentration of Na (in M) when it begins to crysta
Lady bird [3.3K]

For the concentration of Na in M when it begins to crystallize out of the solution is mathematically given as

Na+ = 0.125M

<h3>what is the concentration of Na in M when it begins to crystallize out of the solution?</h3>

Generally, the equation for the Ksp of the solution is mathematically given as

Na⁺+CL⁻

Ksp = SxS

53.9 = s^2

S = 7.34

Molar mass Nacl 58,44

Solubility = 7.34/58.44

Solubility = 0.125M

In conclusion, the concentration of Na in M when it begins to crystallize out of the solution

Na+ = 0.125M

Read more about Ksp

brainly.com/question/7185695

4 0
3 years ago
#1Write a balanced chemical equation to show the reaction. Include state symbols.
AURORKA [14]

Answer:

Balanced chemical equation:

2AgNO₃ + Zn → ZnNO₃ + 2Ag

Type of reaction:

It is the single replacement reaction.

Explanation:

Consider the reaction between zinc and silver nitrate. In this chemical reaction the zinc is substituted in place of silver in silver nitrate compound.

Chemical equation:

AgNO₃ + Zn → ZnNO₃ + Ag

Balanced chemical equation:

2AgNO₃ + Zn → ZnNO₃ + 2Ag

The starting material consist of compound ( AgNO₃) and pure element (Zn).

After reaction a new compound ( ZnNO₃) and pure element (Ag) is generated.

Type of reaction:

It is the single replacement reaction.

Single replacement:

It is the reaction in which one elements replace the other element in compound.

AB + C → AC + B

5 0
3 years ago
During which phase of the moon does a lunar eclipse occur?
Lelu [443]
Full moon
A lunar eclipse can occur only at full moon. A total lunar eclipse can happen only when the sun, Earth and moon are perfectly lined up — anything less than perfection creates a partial lunar eclipse or no eclipse at all.
3 0
3 years ago
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