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3 years ago

How many moles are present in 54.8 mL of mercury if the density of mercury is 13.6 g/mL?

Chemistry

1 answer:

lesya692 [45]3 years ago

8 0

Answer:

3.72 mol Hg

General Formulas and Concepts:

Chemistry - Atomic Structure

Reading a Periodic Table
Using Dimensional Analysis
Density = Mass over Volume

Explanation:

Step 1: Define

D = 13.6 g/mL

54.8 mL Hg

Step 2: Identify Conversions

Molar Mass of Hg - 200.59 g/mol

Step 3: Find

13.6 g/mL = x g / 54.8 mL

x = 745.28 g Hg

Step 4: Convert

$745.28 \ g \ Hg(\frac{1 \ mol \ Hg}{200.59 \ g \ Hg} )$ = 3.71544 mol Hg

Step 5: Check

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

3.71544 mol Hg ≈ 3.72 mol Hg

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Answer:

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3 years ago

Your teacher asks you to follow the instructions in a lab to produce several known chemical reactions. During these procedures,

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Answer:

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Explanation:

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Let's have a further discussion of the evidences.

1. Change of Color- Color change is caused by the combination of two or more substance with different molecular structures. A popular example of this is the Statue of the Liberty, which is made of copper plates. Due to the exposure of copper to elements like water, it changed color.

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3 years ago

Why does the titration of a weak acid with a strong base always have a basic equivalence point? Why does the titration of a weak

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As a result, the solution will become slightly basic in nature.

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3 years ago

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