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3 years ago

If the oh is 6.46(10^-9)M what is the pOH

Chemistry

1 answer:

bagirrra123 [75]3 years ago

3 0

Answer: Thus pOH has value of 8.19

Explanation:

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

pOH is calculated by taking negative logarithm of hydroxide ion concentration.

$pOH=-\log [OH^-]$

Putting in the values:

$pOH=-\log[6.46\times 10^{-9}]$

$pOH=8.19$

Thus pOH has value of 8.19

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3 years ago

How many moles in 4.93 x 10E23 atoms of silver?

leva [86]

<h3>Answer:</h3>

0.819 mol Ag

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right<u> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<u>Stoichiometry</u>

Using Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

4.93 × 10²³ atoms Ag

<u>Step 2: Identify Conversions</u>

Avogadro's Number

<u>Step 3: Convert</u>

Set up: $\displaystyle 4.93 \cdot 10^{23} \ atoms \ Ag(\frac{1 \ mol \ Ag}{6.022 \cdot 10^{23} \ atoms \ Ag})$
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<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

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2 years ago

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Answer:

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Explanation:

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2 years ago

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Explanation:

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3 years ago

What is the number of cations is present in 1.17 g of sodium chloride? Given Na=6*10power 23 mol

natita [175]

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