3 years ago

28 Which statement describes one acid-base theory?(1) An acid is an H+ acceptor, and a base is an H+ donor.

1 answer:

7 0

An acids theory States that An Acid is an H+ donor, and a base is an H+ acceptor.

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Dmitry [639]

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Margaret [11]

Answer:

$\boxed {\boxed {\sf 2.8 \ m }}$

Explanation:

The formula for molality is:

$m=\frac{moles \ of \ solute}{kg \ of \ solvent}$

There are 0.210 moles of KBr and 0.075 kilograms of pure water.

$moles= 0.210 \ mol \\kilograms = 0.075 \ kg$

Substitute the values into the formula.

$m= \frac{ 0.210 \ mol }{0.075 \ kg}$

Divide.

$m= 2.8 \ mol/kg= 2.8 \ m$

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