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Tanzania [10]
3 years ago
14

Which one of the following a compounds a.sugar b.rock salt c.iron d.alloy

Chemistry
2 answers:
8090 [49]3 years ago
7 0

a

alloy is a mixture

iron is an element

murzikaleks [220]3 years ago
3 0

Answer:

a

Explanation:

sugar is composed of different elements combined in a manner form

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A + c = r solve for a
Xelga [282]

Answer: A = -c + r

Explanation:

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3 years ago
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A chemist needs 2.00 liters of hydrochloric acid. How many pints is this?
77julia77 [94]
Is that supposed to say 200/2.00??
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4 years ago
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Sea water, a solution composed of a variety of salts dissolved in water. The salt is the . Soda water, a solution composed of ca
VladimirAG [237]

Answer:

In sea water;

The salt is the solute while the water is the solvent

In soda water;

The water is the solvent, the carbon dioxide is the solute

In air;

The nitrogen is the solvent while the oxygen and the other substances in small amounts are the solutes

Explanation:

A solution is a homogeneous mixture of two or more substances which includes a solvent and a solute. A solute in a solution is dissolved in the solvent of the solution.

Therefore, the solvent is the major part of a solution as it takes in the solvent to form the solution.

In sea water, a solution with a high concentration of salts

The salt is the solute while the water is the solvent

In soda water,  which is a mixture of CO₂ in water,

Here we have in the soda solution, the water is the solvent while the carbon dioxide is the solute

The water is the solvent, the carbon dioxide is the solute

Air a solution made up by a mixture of Nitrogen 78%, oxygen 21%, and small amount of water carbon dioxide and argon

The nitrogen is the solvent while the oxygen and the other substances in small amounts are the solutes.

8 0
3 years ago
Which of the following methods can be used to completely separate a solution containing alcohol and water?
SOVA2 [1]

Answer:

evaporation and distillation

Explanation:

the liquids have different booking points that is why it works

6 0
3 years ago
Read 2 more answers
1.
Serhud [2]

Explanation:

Given that,

The frequency of electromagnetic spectrum is 2.73\times 10^{16}\ Hz

(A) Let the wavelength of this radiation is \lambda. We know that,

c=f\lambda\\\\\lambda=\dfrac{c}{f}\\\\\lambda=\dfrac{3\times 10^8}{2.73\times 10^{16}}\\\\\lambda=1.09\times 10^{-8}\ m

So, the wavelength of this radiation is 1.09\times 10^{-8}\ m.

(B) Let E is the energy associated with this radiation. Energy of an electromagnetic radiation is given by :

E=hf

h is Planck's constant

E=6.63\times 10^{-34}\times 2.73\times 10^{16}\\\\E=1.8\times 10^{-17}\ J

1 kcal = 4184 J

It means,

1.8\times 10^{-17}\ J=\dfrac{1}{4184}\times 1.8\times 10^{-17}\\\\=4.3\times 10^{-21}\ \text{kcal}

Hence, this is the required solution.

3 0
4 years ago
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