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3 years ago

Water has a density of 1.0g/ml * Physical Property Physical Change Chemical Property Chemical Change

Chemistry

1 answer:

Daniel [21]3 years ago

5 0

The density of water is a physical property.

You can measure it without changing the water to a different substance.

It is not a physical change because the water does not change to ice or steam.

You can observe a chemical property or a chemical change only if the water changes to a different substance.

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omeli [17]

Answer:

84 pt =__50.4399___ qt

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Explanation:

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3 years ago

Read 2 more answers

What is the volume of 40.0 grams of argon gas at STP ?

MrRa [10]

Answer:

24.9 L Ar

General Formulas and Concepts:

Atomic Structure

Reading a Periodic Table
Moles
STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 K

Aqueous Solutions

States of Matter

Stoichiometry

Using Dimensional Analysis

Explanation:

Step 1: Define

[Given] 40.0 g Ar

[Solve] L Ar

Step 2: Identify Conversions

[PT] Molar Mass of Ar - 39.95 g/mol

[STP] 22.4 L = 1 mol

Step 3: Convert

[DA] Set up: $\displaystyle 40.0 \ g \ Ar(\frac{1 \ mol \ Ar}{39.95 \ g \ Ar})(\frac{22.4 \ L \ Ar}{1 \ mol \ Ar})$
[DA] Divide/Multiply [Cancel out units]: $\displaystyle 24.9235 \ L \ Ar$

Step 4: Check

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

24.9235 L Ar ≈ 24.9 L Ar

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3 years ago

Why is it beneficial for chemists to understand as many periodic trends as they can?

Alexandra [31]

Answer:

It can help identify elements quicker.

Explanation:

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Which of the following options would be the best for dissolving PbBr2(s)?

Nezavi [6.7K]

Answer:

2) Add a solution of NaBr

Explanation:

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