2 years ago

Answer with explanation

1 answer:

8 0

The answer should be:

KOH (aq) + HCl (aq) --> KCl (aq) + H20 (l).

KOH is a base, because OH can accept a H+.
HCl is an acid because it can donate a H+.

In general, bases are : OH-, and acids are : H+.

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Which law states that the volume of a gas is proportional to the moles of the gas when pressure and temperature are kept constan

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Answer:

Explanation:

The formula for sodium is Na. It does not form a molecule in some way.

1 mol Na = 6.02*10^23 atoms

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x = 3.91 * 6.02 * 10^23

x = 23.65 * 10^23

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Scientific notation is always expressed as a number 1 ≤ x < 10

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3 years ago

How many moles are in 24.75 g of H2O? What is given the conversation and the unknown?

riadik2000 [5.3K]

Answer:

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General Formulas and Concepts:

Chemistry - Atomic Structure

Reading a Periodic Table
Using Dimensional Analysis

Explanation:

Step 1: Define

24.75 g H₂O

Step 2: Identify Conversions

Molar Mass of H - 1.01 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of H₂O - 2(1.01) + 16.00 = 18.02 g/mol

Step 3: Convert

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Step 4: Check

We are given 4 sig figs. Follow sig fig rules and round.

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