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3 years ago

A solid sample of oil until it turns an iquid. which property of the oil will decrase?

Chemistry

1 answer:

Mademuasel [1]3 years ago

6 0

Answer:

Density of the oil

Explanation:

As the oil sample is warmed and it turns liquid, the density of oil will decrease due to increase in volume of the oil.

Warming of the oil increases the volume of oil as it melts.
The once solid oil becomes more mobile and takes up more space.
Although the mass is the same.
Since volume increases, the density of the oil will reduce because, density is the mass per unit volume of a substance.

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Increase

Explanation:

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If the initial temperature and pressure is standard,

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3 years ago

How many atoms are in a 1.8 mol sample of Magnesium (Mg)?

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Answer:

1.1 × 10²⁴ atoms Mg

General Formulas and Concepts:

Atomic Structure

Moles
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Stoichiometry

Using Dimensional Analysis

Explanation:

Step 1: Define

Identify

[Given] 1.8 mol Mg

[Solve] atoms Mg

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

[DA] Set up: $\displaystyle 1.8 \ mol \ Mg(\frac{6.022 \cdot 10^{23} \ atoms \ Mg}{1 \ mol \ Mg})$
[DA] Multiply [Cancel out units]: $\displaystyle 1.08396 \cdot 10^{24} \ atoms \ Mg$

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

1.08396 × 10²⁴ atoms Mg ≈ 1.1 × 10²⁴ atoms Mg

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3 years ago

The gas pressure inside a high vacuum chamber is 0.000000132atm. Calculate the gas pressure in mmHg and torr. Round each of your

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Answer:

The gas pressure in both mmHg and torr is 1.00 x10⁻⁴.

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