Question you have about rocks or minerals

Chemistry

1 answer:

lisov135 [29]3 years ago

5 0

What minerals do rocks have?

Do all rocks have minerals?

What is the hardest mineral?

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Which example best demonstrates the relationship between temperature and pressure? bubbles forming in dough when it is heated bu

Margaret [11]

I think the correct answer from the choices listed above is the first option. The best example that demonstrates the relationship between temperature and pressure would be that <span>bubbles forming in dough when it is heated. Hope this answers the question.</span>

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3 years ago

What's your favorite show mines riverdale and glee also who's your crush teehee

Dominik [7]

Answer:

Obviously sponge bob come on!

Explanation:

He's amazing.

and part 2 is a secret lol

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4 years ago

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Explain why the pbcl2 dissolved when water was added

lara [203]

PbCl2 would not dissolve because it is insoluble based on the solubility rules for substances that will dissolve in water. This compound would instead form a solid precipitate at the bottom of the container.

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4 years ago

An atom has 30 protons, 21 neutrons, and 19 electrons. Is this an ion? If so, what type of ion is this?

marissa [1.9K]

Answer:

An atomic number

Explanation:

If a neutral atom has 30 protons and 34 neutrons, the number of electrons in the atom is: A) 94. B) 34. 64. ... 17) What is the symbol for the ion with 19 protons and 18 electrons? A) F+. B) K+ ... 21) Identify the metalloid in the following list. Hope this helps you! Ask me anything if you have any quistions!

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4 years ago

A 23.6 g sample of NagPO4 (molar mass 163.94 g/mol) is dissolved in enough water to produce

Gnom [1K]

Taking into account the definition of molarity, the concentration of Na₃PO₄ in solution is 0.192 $\frac{moles}{lliter}$ .

<h3>Definition of molarity</h3>

Molar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

$Molarity=\frac{number of moles}{volume}$

Molarity is expressed in units $\frac{moles}{lliter}$ .

<h3>Concentration of Na₃PO₄ in solution</h3>

Being the molar mass of Na₃PO₄ 163.94 g/mole, that is, the amount of mass that a substance contains in one mole, the amount of moles that contains 23.6 g sample of Na₃PO₄ is calculated as:

$23.6 gramsx\frac{1 mole}{163.94 grams} = 0.144 moles$