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icang [17]
3 years ago
11

Which method would you use to separate rice grains, which have accidentally been mixed with flour

Chemistry
2 answers:
ale4655 [162]3 years ago
6 0

Answer:

I would sieve them because the flour will go through but not the rice

Explanation:

Nat2105 [25]3 years ago
3 0

Answer: I would sieve them

Explanation: The flour would go through the holes but the rice won’t.

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Which substance gives heat and light after combustion?
Mariulka [41]

Answer:

Magnesium oxide

Explanation:

The substance which undergoes combustion is said to be combustible.It is called fuel. If a magnesium ribbon is heated,it starts burning. When a magnesium ribbon burns,it combines with the oxygen of air to form magnesium oxide,and liberates heat and light.

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How can you get unconscious
sesenic [268]
When sudden changes occurs in the body. lack of blood flow in the brain
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A sample of air was collected on a day when the total atmosphere pressure was
zhuklara [117]

Answer:

1. The gas law used: Dalton's law of partial pressure.

2. Pressure of nitrogen = 331 mmHg

Explanation:

From the question given above, the following data were obtained:

Total pressure (Pₜ) = 592 mmHg

Pressure of Oxygen (Pₒ) = 261 mmHg

Pressure of nitrogen (Pₙ) =?

The pressure of nitrogen in the sample can be obtained by using the Dalton's law of partial pressure. This is illustrated below:

Pₜ = Pₒ + Pₙ

592 = 261 + Pₙ

Collect like terms

592 – 261 = Pₙ

331 = Pₙ

Pₙ = 331 mmHg

Therefore, the pressure of nitrogen in the sample is 331 mmHg

5 0
3 years ago
Qué permite las reacciones de redox
liberstina [14]

Explanation:

I am not understanding your question

5 0
3 years ago
Compare and contrast the elements Potassium, K, and Neon, Ne. Use at least ten comparisons or descriptions.
vovikov84 [41]

Answer:

K is a group 1 element while Ne is a group 0 element

K is a good reducing agent while Ne is inert

K is metal while Ne is a gas

K has one valence electron while Ne has no valence electron

Explanation:

4 0
3 years ago
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