(4,32 x 103 cm) - (1.6 × 10^ mm)

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Ответ:

mari530

22.12.2021

Chemistry

$\boxed {\boxed {\sf 1.24727159 \ moles \ of \ sulfur }}$

Explanation:

To convert from grams to moles, we must use the molar mass found on the Periodic Table of Elements.

1. Molar Mass

This is a sample of sulfur, so look for S on the table.

S: 32.07 g/mol

2. Convert from Grams to Moles

Use the molar mass as a ratio.

$\frac { 32.07 \ g \ S}{ 1 \ mol \ S }$

Multiply by the given number of grams: 40

$40 \ g \ S * \frac { 32.07 \ g \ S}{ 1 \ mol \ S }$

Flip the fraction so the grams of sulfur will cancel each other out.

$40 \ g \ S * \frac {1 \ mol \ S }{ 32.07 \ g \ S}=40* \frac {1 \ mol \ S }{ 32.07 }$

$\frac {40 \ mol \ S } { 32.07 } = 1.24727159 \ mol \ S$

There are 1.24727159 moles of sulfur.

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