The mass of a substance is the mass per mole of its entities, where the term entities can describe

Answers

Answer 1

Answer:

Answer:

The molar mass of a substance is the mass per mole of its entities, where the term entities can describe atoms, molecules, ions or formula units.

Explanation:

Molar mass is the mass of any compound divided by mole. Means, if any chemical is given a specific molar mass it means this mass is being given by 6.022 × 10²³ entities of that chemical.

The molar mass of any compound is calculated by adding up the atomic masses of all atoms present in that chemical.

Example:

Molar Mass of H₂ = 1.008 + 1.008 = 2.016 g/mol

Molar Mass of NaOH = 23 + 16 + 1 = 40 g/mol

Molar Mass of HCl = 1 + 35.5 = 36.5 g/mol

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Which is the element with the highest electronegativity value?A)cesium
B)helium
C)calcium
D) fluorine

Answers

The highest electronegativity value is fluorine

Fluorine not helium if you do research youll see why

How do synthesis reactions and a decomposition reactions differ

Answers

a synthesis would be A+B-->AB its combining, decomposition is AB-->A+B, its the breaking up of a substance.

What is the initials for sodium chloride

Answers

NaCL?
Not completely sure about this just to warn you:).
--Thanks, and hoped this helped!

All atoms of the same element have the same ____.

Answers

Answer:

The correct answer is protons.

Explanation:

Hello! Let's solve this!

All atoms of the same element have the same number of protons. The isotopes of an element are chemical species that change the number of neutrons but not that of protons.

Then the different atoms of the same element differ in their protons.

The correct answer is protons.

All atoms of the same element have the same number of protons.

Protons are subatomic particles that are found within the nucleus of an atom. They have a positive electrical charge, which is equal in magnitude but opposite in sign to the negative charge of electrons. Protons are one of the three main types of particles found in atoms, along with neutrons and electrons.

The number of protons in an atom determines its atomic number and defines the element. For example, an atom with one proton is hydrogen (H), while an atom with six protons is carbon (C).

Learn more about protons, here:

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What is global warming? a) a recent increase in the average global temperature near Earth’s surface
b) a period of time when temperatures across the planet are colder than normal
c) a characteristic of summer that returns seasonally
d) the gain of heat in coastal areas from El Niño storms

Answers

Global Warming is a gradual increase in the overall temperature of the earth's atmosphere.

So, i believe the answer to your question would be a) a recent increase in the average global temperatures near Earth's surface

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Which provides evidence to support the big bang theory? A.
the change in carbon dioxide levels in the atmosphere

B.
the composition of the sun

C.
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D.
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Answers

A.
the change in carbon dioxide levels in the atmosphere

hope that's right and hope i helped

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