3 years ago

A solution of a concentration of H+ (10-4 M) has a pH of

Chemistry

1 answer:

Alecsey [184]3 years ago

3 0

Answer:

pH = 4

Explanation:

pH = -log[H⁺] = -log(10⁻⁴) = -(-4) = 4

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If a sample contains 21.2 g N, how many moles of N does it contain?

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Hello!

If a sample contains 21.2 g N, how many moles of N does it contain?

0.66 mol

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We have the following data:

m (mass) = 21.2 g

MM (Molar mass of Nitrogen) = 14 g / mol

n (number of moles) = ?

Formula:

$n = \dfrac{m}{MM}$

Solving:

$n = \dfrac{m}{MM}$

$n = \dfrac{21.2\:\diagup\!\!\!\!\!g}{14\:\diagup\!\!\!\!\!g/mol}$

$\boxed{\boxed{n\approx 1.51\:mol}}\end{array}}\qquad\checkmark$

Answer:

1.51 mol

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I Hope this helps, greetings ... Dexteright02! =)

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A solution of a concentration of H+ (10-4 M) has a pH of​

A solution of a concentration of H+ (10-4 M) has a pH of