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3 years ago

5

6.02 x

ex-formula">

1 answer:

VMariaS [17]3 years ago

5 0

The answer is 602 but im not sure hehe

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What is the molarity of a solution made by diluting 0.025L of 6.0 M HCl until

Nadusha1986 [10]

Answer:

Explanation:

Use the dilution equation: M1V1 = M2V2

M1 = 6.0 M

V1 = 0.025 L

M2 = ?

V2 = 1.75 L

(6.0 M)(0.025 L) = M2(1.75 L)

Solve for M2 --> M2 = 0.086 M HCl

3 0

3 years ago

Calculate the molarity when 135 g of KCl is dissolved to make a 2.50 L solution. Round to two significant digits.

inysia [295]

<h2>0.72 mol/L</h2>

Explanation:

$\textrm{Molarity of a solution}=\frac{\textrm{Number of moles of solvent}}{\textrm{Volume of solution in Liters}}$

We are given a $2.50L$ solution which contains $135g$ of $KCl$ .

To calculate number of moles of $KCl$ present, we need to find it's molar mass from charts. Molar Mass of $KCl$ is known to be $74.55\frac{g}{Mol}$ .

Number of moles of $KCl$ present = $\frac{\textrm{Given weight}}{\textrm{Molar Mass}}\textrm{ = }\frac{135g}{74.55\frac{g}{Mol}}\textrm{ = }1.81087mol$

Molarity = $\frac{1.81087mol}{2.50L}=0.7243\frac{mol}{L}$

∴ Molarity of given $KCl$ solution = $0.72\frac{mol}{L}$

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3 years ago

What is the smallest unit of an element called

steposvetlana [31]

The smallest unit of an element is called an Atom. An atom consists of protons, neutrons, and electrons.

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4 years ago

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Explain how the different layers of the mantle have a different state of matter. (Why is

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Answer:

the crust is solid because the particles are tightly packed and moves very little. the mantle is a liquid because the particles are more spread apart and have more movement.

Explanation:

i already explained it :)

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3 years ago

Metals are found on the left-hand side of the periodic table. True or False

Tanya [424]

Answer:

true pls mark brainiest

Explanation:

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