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tigry1 [53]
3 years ago
11

Which statement about gases is true? A. They are made up of particles that always move very slowly. B. They are made up of parti

cles that travel in a curved path when in motion. C. They are made up of hard spheres that vibrate quickly in stationary positions. D. They are made up of hard spheres that are in random motion.

Chemistry
2 answers:
rosijanka [135]3 years ago
7 0

Answer: D. They are made up of hard spheres that are in random motion.

Explanation:

A gas is a <u>state of aggregation of matter</u> in which, under certain conditions of temperature and pressure, <u>its molecules interact weakly with each other, without forming molecular bonds</u>, adopting the shape and volume of the container that contains them and tending to separate everything possible because of its <u>high concentration of kinetic energy</u>.

The molecules of a gas are practically <u>free</u> and have the ability to be distributed throughout the space in which they are contained because <u>the gravitational forces and attraction between them are practically negligible</u> compared to the speed at which they move. .

Therefore, gas molecules do not travel specific trajectories or vibrate in a stationary position, instead <u>they move quickly and randomly through the entire space of the container that contains them.</u>

zalisa [80]3 years ago
7 0

Answer:

They are made up of hard spheres that are in random motion.

Explanation:

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What is the molarity of a solution that contains 9.63 grams of HCl in 1.5 liters of solution? 1 H 1.01 Hydrogen 17 Cl 35.45 Chlo
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Hey there !

Molar mass HCl :

HCl =1.01 + 35.45 => 36.46 g/mol

Number of moles ( solute) :

n = m / mm

n = 9.63 / 36.46

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Therefore :

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4 years ago
Iron is found in Earth's crust as several iron compounds. Calculate the mass in kilograms of the amount of each of the following
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The mass of hematite that contains 8.0×10³ kg of iron is 2.29 × 10⁴ kg.

<h3>What are iron ores?</h3>

Iron ores refers to minerals in which iron occur in combined form found in the earth's crust.

Some ores of iron include:

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Molar mass of hematite, Fe₂O₃ = 160 g/mol

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Percent mass of iron in hematite = 56/160 = 35%

The mass of hematite that contains 8.0×10³ kg of iron = 8.0 × 10³kg/0.35 = 2.29 × 10⁴ kg.

Therefore, the mass of hematite that contains 8.0×10³ kg of iron is 2.29 × 10⁴ kg.

Learn more about iron ores at: brainly.com/question/4693242

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2 years ago
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If you do not assume ideal gas, you use the compressibility factor, z. The gas equation would now become

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