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Mashcka [7]
3 years ago
15

What is the molarity of 0.540g Mg N,0. in 250 mL of solution?​

Chemistry
1 answer:
Sati [7]3 years ago
3 0

Answer:

2.16x10^-03

molarity=mass÷volume

0.540÷250

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You dissolve 14 g of Mg(NO3)2 in water and dilute to
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Answer:

0.127M

Explanation:

Molarity of a solution = number of moles (n) ÷ volume (V)

Molar mass of Mg(NO3)2 = 24 + (14 + 16(3)}2

= 24 + {14 + 48}2

= 24 + 124

= 148g/mol

Using the formula, mole = mass/molar mass, to convert mass of Mg(NO3)2 to mole

mole = 14g ÷ 148g/mol

mole = 0.095mol

Volume = 750mL = 750/1000 = 0.75L

Molarity = 0.095mol ÷ 0.75L

Molarity = 0.127M

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How do I calculate volume of a gas?
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