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3 years ago

Which of the following is not a physical property of a liquid? indefinite volume indefinite shape definite mass

Chemistry

2 answers:

r-ruslan [8.4K]3 years ago

5 0

Answer: Option (a) is the correct answer.

Explanation:

When there occurs no change in chemical composition of a substance then it is known as a physical property.

For example, volume, mass, shape, size, density etc are all physical properties.

In liquids, the molecules are held by slightly less strong intermolecular forces of attraction as compared to a solid. So, the molecules of a liquid are able to slide over each other as they have kinetic energy.

Therefore, a liquid has indefinite shape because they acquire the shape of container in which they are placed. But a liquid does not have a definite volume.

Thus, we can conclude that indefinite volume is not a physical property of a liquid.

Elanso [62]3 years ago

3 0

Definitely definite mass because liquids can take on any shape and can have different volumes.

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Answer:

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Explanation:

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3 years ago

What is the mass of 11.4 L of NO2

kodGreya [7K]

At STP volume is 22.4 L

Molar mass NO₂ = 46.0 g/mol

1 mole ---------- 22.4 L
? mole ---------- 11.4 L

moles = 11.4 * 1 / 22.4

moles = 11.4 / 22.4

= 0.5089 moles of NO₂

Mass NO₂ :

moles NO₂ * molar mass

0.5089 * 46.0

= 23.4094 g of NO₂

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3 years ago

What volume of oxygen gas is needed to completely combust 0.202L of butane (C4H10) gas?

saveliy_v [14]

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3 years ago

How many moles are in 17.50g of SO2

monitta

The formula for mole is
n= Mass/Mol mass
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O2= 16(2)
—————
64 g/mol
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3 years ago

Question 2 of 50

wolverine [178]

The thermal decomposition of calcium carbonate will produce 14 g of calcium oxide. The stoichiometric ratio of calcium carbonate to calcium oxide is 1:1, therefore the number of moles of calcium carbonate decomposed is equal to the number of moles of calcium oxide formed.

Further Explanation:

To solve this problem, follow the steps below:

Write the balanced chemical equation for the given reaction.
Convert the mass of calcium carbonate into moles.
Determine the number of moles of calcium oxide formed by using the stoichiometric ratio for calcium oxide and calcium carbonate based on the coefficient of the chemical equation.
Convert the number of moles of calcium oxide into mass.

Solving the given problem using the steps above:

STEP 1: The balanced chemical equation for the given reaction is:

$CaCO_{3} \rightarrow \ CaO \ + \ CO_{2}$

STEP 2: Convert the mass of calcium carbonate into moles using the molar mass of calcium carbonate.

$mol \ CaCO_{3} \ = 25 \ g \ CaCO_{3} \ (\frac{1 \ mol \ CaCO_{3}}{100.0869 \ g \ CaCO_{3}})\\ \\\boxed {mol \ CaCO_{3} \ = 0.2498 \ mol}$

STEP 3: Use the stoichiometric ratio to determine the number of moles of CaO formed.

For every mole of calcium carbonate decomposed, one more of a calcium oxide is formed. Therefore,

$mol \ CaO \ = 0.2498 \ mol$

STEP 4: Convert the moles of CaO into mass of CaO using its molar mass.

$mass \ CaO \ = 0.2498 \ mol \ CaO \ (\frac{56.0774 \ g \ CaO}{1 \ mol \ CaO})\\ \\mass \ CaO \ = 14.008 \ g$

Since there are only 2 significant figures in the given, the final answer must have the same number of significant figures.

Therefore,

$\boxed {mass \ CaO \ = 14 \ g}$

Learn More

Learn more about stoichiometry brainly.com/question/12979299
Learn more about mole conversion brainly.com/question/12972204
Learn more about limiting reactants brainly.com/question/12979491

Keywords: thermal decomposition, stoichiometry

5 0

3 years ago