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oksian1 [2.3K]
2 years ago
12

A. Is straining cooked pasta from water a physical or chemical separation?

Chemistry
1 answer:
Greeley [361]2 years ago
3 0

A) Answer is: physical separation, because there is no reaction and new substance is not synthesise.

B) Chemical separation, old bonds are broken and new ones are formed.

Chemical reaction: 2H₂O → 2H₂ + O₂.

C) Mixtures, because there are no chemical bonds between substances in the mixture.

D) Compounds, because chemical bonds betwwen elements in the compounds must be broken.

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marin [14]

Answer:

[A]²

Explanation:

Since the formation is independent of D, D is 0 order.

Since a quadruples when it is doubled it can be written as

2A^X= 4

To find the unknown power we can assume A= 1 to make the math simple. So When a = 2 (Because you doubled it) raised to X power it will equal 4

so the unknown power is 2

Making the rate law

[a]²[b]⁰

or simply just

[A]²

8 0
3 years ago
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Natali5045456 [20]

Answer:

92%

Explanation:

I believe. Hope this was helpful.

8 0
2 years ago
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Answer: Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color chage, formation of a precipitate, formation of a gas, odor change, temperature change.

5 0
3 years ago
Which statement is always true about a reversible chemical reaction?
ad-work [718]

Answer:

<em>It is a chemical reaction in which the reactants form products and products react together to give reactants back. That means reversible reactions can go in both directions forward as well as backward direction.</em>

3 0
3 years ago
Which of the following is a testable hypothesis?
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