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2 years ago

The most familiar elements are typically the most elements

Chemistry

1 answer:

sergey [27]2 years ago

7 0

Answer:

The most familiar elements are the elements found in nature, such as sodium, carbon, oxygen, ect...

Explanation:

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alukav5142 [94]

Answer:

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If 45 mL of water are added to 250 mL of a 0.75 M K2SO4 solution, what will the molarity of the diluted solution be?

krok68 [10]

Answer:

$\large\boxed{\large\boxed{0.64M}}$

Explanation:

When you form a <em>diluted solution</em> from a mother (concentrated) solution, the moles of solute are determined by the mother solution.

The main equation is:

$Molarity=\dfrac{\text{moles of solute}}{\text{volume of the solution in liters}}$

Then, since the moles of solute is the same for both the mother solution and the diluted solution:

$\text{Molarity mother solution }\times\text{ volume mother solution}=\\\\=\text{Molarity diluted solution }\times\text{ volume diluted solution}$

Substitute and solve for the molarity of the diluted solution:

$250mL\times 0.75M=(45mL+250mL)\times M\\\\\\M=\dfrac{250mL\times 0.75M}{295mL}=0.64M$

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What happen when you add heat to solids and liquids?

sasho [114]

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I'll mark brainliest!! :)

Viefleur [7K]

I believe the answer is C, AgBr. I hope this helps

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Yes this is true good job

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