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3 years ago

Easy ways to understand ionic formulae?

1 answer:

3 0

Https://superhumanacademy.com/how-to-memorize-polyatomic-ions-chemical-formulas/

This is how I memorized the ionic formulae. It is a lot to remember, so it does take some time and studying. But this website helped me learn it fast and in a suuuper unique way. I learned it 3 years ago and could still name quite a bit of them. Hope this helps!!!

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Do humans really have a third eye

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Well I wouldn't quite call it a third eye but yes we have the ability to see things if we connect to our inner selves

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3 years ago

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Could somebody please give me an example of some physical properties for any substance?

KIM [24]

Answer:

A physical property is a characteristic of matter that is not associated with a change in its chemical composition. Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity.

Explanation:

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2 years ago

Do atoms or molecules in solids have no motion

Svet_ta [14]

Answer:

Well yes and no

Explanation:

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3 years ago

What is the molarity of a solution containing 0.32 moles of NaCI in 3.4 liters

CaHeK987 [17]

Answer:

.094 M

Explanation: 0.32molNaCl/ 3.4L = .094M

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2 years ago

Calculate the molarity of solution of "sodium sulfate" that contains 5.2 grams sodiums sulfate diluted to 500mL

wlad13 [49]

Taking into account the definition of molarity, the molarity of solution of sodium sulfate is 0.0732 $\frac{moles}{liter}$ .

<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 $\frac{moles}{liter}$ .

<h3>Molarity of solution of sodium sulfate.</h3>

In this case, you have:

number of moles of sodium sulfate= $5.2 grams\frac{1 mole}{142 grams} = 0.0366 moles$ (being 142 g/mole the molar mass of sodiums sulfate)
volume= 500 mL= 0.5 L (being 1000 mL= 1 L)

Replacing in the definition of molarity:

$Molarity=\frac{0.0366 moles}{0.5 L}$

Solving:

Molarity= 0.0732 $\frac{moles}{liter}$

Finally, the molarity of solution of sodium sulfate is 0.0732 $\frac{moles}{liter}$ .

Learn more about molarity:

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1 year ago