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3 years ago

Temperature measures the average kinetic energy of a substance's molecules.

Chemistry

2 answers:

Oksanka [162]3 years ago

6 0

The correct answer is A. True

Explanation:

The temperature of a substance or body refers to the heat this has which can be measured using different such as the Celcius scale or the Kelvin Scale. Additionally, the temperature is equivalent to the average kinetic energy of molecules or to the energy produced by the molecules of a substance derived from the movement of it and that creates heat. This applies to different substances but especially to gases and ideal ones. According to this, it is true temperature measures the average kinetic energy of a substance's molecules.

Komok [63]3 years ago

5 0

True

According to the molecular theory. The average kinetic energy of a gas particle is directly proportional to the temperature. An increase in temperature increases the speed in which the gas molecules move. All gases at a given temperature have the same average kinetic energy.

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If 87 grams of K2SO4 (molar mass 174 grams) is dissolved in enough water to make 250 milliliters of solution, what are the conce

guapka [62]

Answer:

$M_{K^+}=4.0M \\\\M_{SO_4^{2-}}=2.0M$

Explanation:

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In this case, since the molarity of a solution is defined as the moles of solute divided by the volume of solution liters, given the mass of potassium sulfate, we can compute the moles by using its molar mass (174.24 g/mol):

$n_{K_2SO_4}=87gK_2SO_4*\frac{1molK_2SO_4}{174.27gK_2SO_4} =0.50molK_2SO_4$

Thus, since one mole of potassium sulfate has two moles of potassium ions (K₂) and one mole of sulfate ions, we can compute the moles of each ion as shown below:

$n_{K^+}=0.50molK_2SO_4*\frac{2molK^+}{1molK_2SO_4}=1.0molK^+\\\\ n_{SO_4^{2-}}=0.50molK_2SO_4*\frac{1molSO_4^{2-}}{1molK_2SO_4}=0.50molSO_4^{2-}\\$

In such a way, the molarity of each ion turns out:

$M_{K^+}=\frac{1.0mol}{0.250L}=4.0M \\\\M_{SO_4^{2-}}=\frac{0.5mol}{0.250L}=2.0M$

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5 0

3 years ago

How many atoms of oxygen are contained in 160 grams of N203?

Ahat [919]

Answer:

i think it is 1.27 x1024

Explanation:

i don't really know though

7 0

3 years ago

Read 2 more answers

The formula for a lutetium carbonate compound is Lu2(CO3)3. What would be the formula for a lutetium nitrate compound given that

emmasim [6.3K]

Lu(NO₃)₃ would be the formula for a lutetium nitrate compound, given that the charge of lutetium is the same in both compounds.

From Lu2(CO₃)₃, we can determine the charge of the variable charge transition metal Lu has a charge of 3, as CO₃ has a 2⁻ charge (3⁻² = 6⁻¹, 6/2 = 3). Then, we apply this to nitrate, which has a charge of 1⁻. Balance charges, reduce, and you get Lu(NO₃)₃.

<h3><u>Nitrates:</u></h3>

With the chemical formula NO⁻₃, nitrate is a polyatomic ion. This ion is found in salts, which are known as nitrates. Fertilizers and explosives frequently contain nitrates as a component. Nearly all inorganic nitrates are water soluble. Bismuth oxynitrate is an illustration of an insoluble nitrate.

Natural compounds called nitrates (or nitrites) can be found in the soil, air, and water. In order to prevent the growth of germs and to improve the flavor and color of food, nitrates are also employed as a food additive.

To view similar questions based on nitrates of different compounds, refer to:

brainly.com/question/5346392

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4 0

2 years ago

Should people use crispr to change human traits

noname [10]

Answer:

What do <u>YOU</u> think?

Explanation:

This question is asking for an opinion. The word should is included.

5 0

2 years ago

Identify the missing information for each atom or ion. Note that the atoms and ions are not necessarily neutral.

zimovet [89]

Answer:

Number of neutrons: 44

Number of protons: 34

Number of electrons: 36

Explanation:

The atomic number of Se (Selenium) is 34

Mass number is 78

Number of neutrons = mass number - atomic number = 78 - 34 = 44

Number of protons is the same as the atomic number

Number of protons = 34

Selenium ion has a charge of -2. This means it accepts two more electrons

Number of electrons = atomic number + 2 = 34 + 2 = 36

5 0

4 years ago