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Naya [18.7K]
3 years ago
9

Gloria is making a model of an atom. She uses three different colors to represent the three basic particles that make up the ato

m. Which particles should she display in the nucleus of the atom?
Group of answer choices

electrons and protons

protons and neutrons

electrons only

neutrons only
Chemistry
1 answer:
xz_007 [3.2K]3 years ago
8 0

Answer:

protons and neutrons

Explanation:

The nucleus of the atom contains protons and neutrons. The electrons of the atom orbit the nucleus.

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6 0
3 years ago
How many grams of NaOH are<br> needed to make 400. mL of<br> 1.50 M solution?
juin [17]

Answer:

24g of NaOH are required

Explanation:

Molarity, M, is an unit of concentration widely used in chemistry defined as the ratio between moles of solute (In this case, NaOH), and volume of solution in liters.

We can find the moles of NaOH and its mass with the volume and desired concentration as follows:

<em>Moles NaOH:</em>

400.0mL = 0.400L * (1.50mol / L) = 0.600 moles NaOH

<em>Mass NaOH -Molar mass: 40.0g/mol-:</em>

0.600 moles * (40.0g / mol) =

<h3>24g of NaOH are required</h3>
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Which is a characteristic of all ions?
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Answer:

I guess B They have a charge

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