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2 years ago

1. How many moles of HCl are in 7.80 X 1022 molecules? Answer:___0.13 moles of HCI

Chemistry

1 answer:

Nuetrik [128]2 years ago

8 0

Answer: 7.80× $10^{22}$ $\frac{1}{6.02*10^{23} }$ =.13

Explanation:

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Answer: $1.94\times 10^{-3}g$ of NaOH

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration.

$pH=-\log [H^+]$

Putting in the values:

$10.020=-\log[H^+]$

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Thus $1.94\times 10^{-3}g$ of NaOH is needed to prepare 463 mL of solution with a pH of 10.020

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1. How many moles of HCl are in 7.80 X 1022 molecules? Answer:___0.13 moles of HCI​

1. How many moles of HCl are in 7.80 X 1022 molecules? Answer:___0.13 moles of HCI