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evablogger [386]

3 years ago

6

A chemistry instructor provides each student with 8 test tubes at the beginning of the year. If there are 28 students per class,

how many test tubes are required for three chemistry classes?

1 answer:

klemol [59]3 years ago

7 0

Three classes: 28×3=84 students
8 test tubes per student: 84× 8= 672
hope this helps!

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If I had 3.50 x 10 24molecules of Cl2 gas, how many grams is this?

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Answer:

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General Formulas and Concepts:

<u>Atomic Structure</u>

Reading a Periodic Table
Moles
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<u>Stoichiometry</u>

Using Dimensional Analysis

Explanation:

<u>Step 1: Define</u>

[Given] 3.50 × 10²⁴ molecules Cl₂

[Solve] grams Cl₂

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

Avogadro's Number

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<u>Step 3: Convert</u>

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<u>Step 4: Check</u>

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