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3 years ago

Covert 12.64 g NaOH to moles

Chemistry

2 answers:

grandymaker [24]3 years ago

7 0

No of moles = mass/molar mass
mass = 12.64 g
molar mass = 40 g/mol
no of moles = 12.64/40
no of moles = 0.316 g

mezya [45]3 years ago

3 0

To calculate moles, use the formula Mol = Mass/ Mr.... Mr of NaOH is 23+ 16 + 1 = 40.... Mol = 12.64/40 = 0.316

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<h3>What is science?</h3>

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2 years ago

The CRC Handbook, a large reference book of chemical and physical data, lists two isotopes of indium (). The atomic mass of 4.28

ivanzaharov [21]

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Explanation:

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Formula used to calculate average atomic mass follows:

.....(1)

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For isotope 2:

Mass of isotope 2 = x amu

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Fractional abundance of isotope 2 = 0.9572

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4 0

3 years ago

How many molecules of co2 in 97.3 grams of co2

s2008m [1.1K]

Answer:

1.33 × 10²⁴ molecules CO₂

General Formulas and Concepts:

Chemistry - Stoichiometry

Reading a Periodic Table
Dimensional Analysis
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Explanation:

Step 1: Define

97.3 g CO₂

Step 2: Define conversions

Avogadro's Number

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Step 4: Check

We are given 3 sig figs. Follow sig fig rules.

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3 years ago