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3 years ago

What is Waves? Please help will give brainliest

Chemistry

1 answer:

alekssr [168]3 years ago

7 0

Answer:

Waves involve the transport of energy without the transport of matter. In conclusion, a wave can be described as a disturbance that travels through a medium, transporting energy from one location (its source) to another location without transporting matter.

Explanation:

hope this helps, I tried to give an easy definition :)

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Why would you add boiling chips/stones to a solution that is to be refluxed? when should you add them?

anygoal [31]

Answer: Boiling chips provide surfaces on which bubbles can form as the liquid boils.

Hope this helps!

6 0

3 years ago

A chemical change occurs when an egg cooks. What effect does cooking have on the physical properties of an egg?

fomenos

I'm not sure, but maybe burning point...

4 0

3 years ago

?Al + ?H2SO4 → ?Al2(SO4)3 +3H2

AfilCa [17]

The answer is: 27 grams of aluminium.

Balanced chemical reaction: 2Al + 3H₂SO₄ → Al₂(SO₄)₃ + 3H₂.

n(H₂) = 1.5 mol; amount of hydrogen.

Form chemical reaction: n(Al) : n(H₂) = 2 : 3.

n(Al) = 2 · 1.5 mol ÷ 3.

n(Al) = 1.0 mol; amount of aluminium.

m(Al) = n(Al) · M(Al).

m(Al) = 1 mol · 27 g/mol.

m(Al) = 27 g; mass of aluminium.

5 0

3 years ago

Which of the following is NOT a property of an acid

ipn [44]

The answer is B. Acid turns blue litmus paper to red

4 0

3 years ago

A chemistry student needs 10.00 g of isopropenylbenzene for an experiment. He has available 120. g of a 42.7% w/w solution of is

Vanyuwa [196]

<u>Answer:</u> The mass of solution that the chemistry student should use is 23.4 grams

<u>Explanation:</u>

We are given:

Available mass of isopropenylbenzene = 120. g

Amount of isopropenylbenzene needed by chemistry student = 10.00 g

42.7 % (w/w) solution of isopropenylbenzene.

This means that 42.7 grams of isopropenylbenzene is present in 100 grams of solution.

To calculate the mass of solution for given needed of isopropenylbenzene, we apply unitary method:

For 42.7 grams of isopropenylbenzene, the amount of solution needed is 100 grams

So, for 10.00 grams of isopropenylbenzene, the amount of solution needed will be = $\frac{100}{42.7}\times 10=23.4g$

Hence, the mass of solution that the chemistry student should use is 23.4 grams

3 0

3 years ago