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3 years ago

I need help with question 39 please

Chemistry

1 answer:

Naddik [55]3 years ago

8 0

Answer:

Explanation:

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Help i’m taking a test!!

pogonyaev

Answer:

Element Z

Explanation:

I hope this is correct and helps you!

5 0

3 years ago

What does an atom contain?

netineya [11]

Answer:

neutron, proton, and electrons

Explanation:

The protons and the neutrons make up the center of an atom which is called the nucleus

7 0

3 years ago

Explain your answer.

Lilit [14]

Answer:

14. (C) -3; 16. B. 0, 3

Explanation:

14. Ionic charge

X: ns²np³.

The element is three electrons short of having a complete octet.

It is likely to react chemically to add those three electrons and form an X³⁻ ion.

16. Orbitals in subshells

The n = 1 shell contains no p orbitals. All the other shells contain three p orbitals.

The n = 1 shell contains only one s orbital. Every higher shell contains a p subshell, and each p subshell contains three p orbitals.

3 0

3 years ago

The density of copper decreases as temperature increases (as does the density of most substances). Which change occurs in a samp

azamat

Answer: Option (c) is the correct answer.

Explanation:

As we know that density the amount of mass present in per unit volume.

Mathematically, Density = $\frac{mass}{volume}$

So, it means that density is inversely proportional to volume. Hence, when there will be decrease in density of a substance then there will be increase in its volume. That is, expansion of substance will take place.

Also, boiling point of copper is 2,562 degree celsius but we are heating it up to a temperature of 95 degree celsius. This means that copper will remain in liquid state at this temperature.

Thus, we can conclude that a change which occurs in a sample of copper is that copper sample will expand.

3 0

3 years ago

Which is a homogeneous mixture?

Klio2033 [76]

B i think but im not 100 percent sure

7 0

3 years ago