Hydrogen ion, strictly, the nucleus of a hydrogen atom separated from its accompanying electron. The hydrogen nucleus is made up of a particle carrying a unit positive electric charge, called a proton.

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The best way to reduce air pollution is to _____.

spayn [35]

I would say carpool why because you don't know what the hybrid car runs on

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How many grams are in 0.220 mol of Ne?

kumpel [21]

Answer:

4.44 g Ne

General Formulas and Concepts:

Chemistry - Atomic Structure

Reading a Periodic Table
Using Dimensional Analysis

Explanation:

Step 1: Define

0.220 mol Ne

Step 2: Identify Conversions

Molar Mass of Ne - 20.18 g/mol

Step 3: Convert

$0.220 \ mol \ Ne(\frac{20.18 \ g \ Ne}{1 \ mol \ Ne} )$ = 4.4396 g Ne

Step 4: Check

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

4.4396 g Ne ≈ 4.44 g Ne

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