2 years ago

Can you please solve this question???

Chemistry

1 answer:

Mandarinka [93]2 years ago

8 0

Answer:

1 is Argon

2 is Kalium

3 is Calcium

ii)

Y belongs to alkaline metals

Z belongs to alkaline earth metals

iii)

Kalium (Y) is alkaline metal

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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:

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

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

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2 years ago

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Vera_Pavlovna [14]

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An element is to a compound as an organ is to tissue

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2 years ago

What is the pH of a solution with (H+) =2.3x10 -6

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−
log
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[
H
3
O
+
]
=
−
log
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{
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{
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Can you please solve this question??? ​

Can you please solve this question???