1 year ago

Oxygen always become negatively charged when it forms covalent bonds true or false?

Chemistry

1 answer:

Lelechka [254]1 year ago

4 0

Answer:

I think false

Explanation:

bcs oxygen can create good feeling in our body

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3 years ago

True or false? an element consists of only single atoms of that element. a. True b. False

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2 years ago

Special characteristics of metals, like being shiny, are called A Descriptions B Phrases C Qualities D Properties

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Aluminium and potassium nitrate will not react when mixed together?

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Answer:

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Explanation:

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2 years ago

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

lesya692 [45]

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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2 years ago