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horrorfan [7]
3 years ago
14

Atoms and elements are examples of A. molecules. B. mixtures. C. compounds. D. pure substances.

Chemistry
1 answer:
UkoKoshka [18]3 years ago
3 0

Answer:

atom are very tiny partical

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The prefix 'sub' means 'below'. Why are particles smaller than an atom called subatomic particles.
Andru [333]

Answer:

Because they are smaller than an atom

Explanation:

3 0
3 years ago
Seawater, which covers the majority of the earth, is composed primarily of molecules of H2O and equal numbers of Na ions and Cl-
Vsevolod [243]

Explanation:

Species present are H_{2}O(l), Na^{+}(aq) and Cl^{-}(aq). Now, we will calculate the number of componenets present as follows.

                C = n - E

where,   E = number of independent equations

              n = number of phases present

Therefore, we will calculate the number of components as follows.

                        C = 3 - 1

                            = 2

Since, sodium chloride (NaCl) will tend to form a homogeneous mixture in water. Therefore, phase will be equal to 1.

Therefore, it means that there are two components present in one phase.  

5 0
3 years ago
Why is it difficult to collect evidence about the sky
mafiozo [28]
The sky is always changing with new galaxies.
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3 0
4 years ago
What is the mass percent of chlorine in magnesium chloride?
finlep [7]
The total mass of magnesium chloride is 95.21g/mol

The mass of chlorine is 35.45g/mol

To find the mass percent of chlorine, divide its molar mass by the total mass of the substance and multiply the result by 100:
(35.45/95.21)(100)= 37.2%
4 0
3 years ago
Which of the following units is rarely, if ever, used in science labs?
nasty-shy [4]

Answer: C. Quart

Explanation:

Quart is a unit of measurement for liquids and is equivalent to 2 pints.

6 0
3 years ago
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