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3 years ago

What is the normality of a solution that contains 1.89g of h2c2o2 2h2oin 1---ml of solution?

Chemistry

1 answer:

garri49 [273]3 years ago

6 0

First convert mass to number of moles. Molar mass of H2C2O2 • 2H2O = 94 / mol

1.89g / (94 g / mol) = .02 mol H2C2O2 • 2H2O

Then we divide by 0.1 L, or 100 mL, and we get a concentration of 0.2 M.

Since there are two positive ions (2 H+), therefore normality is:

0.4 N

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Arada [10]

Answer:

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Explanation:

We have,

Initial temperature was 34 degrees Celsius

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The heat produced due to change in temperature is given by :

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$m=\dfrac{Q}{c(T_f-T_i)}\\\\m=\dfrac{2200}{4.18\times (100-34)}\\\\m=7.97\ g$

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jeka94

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