Which of the following objects has the highest average kinetic energy? and whyAn ice cube, A pool of cool water, A cup of warm water, A cup of boiling water

Answers

Answer 1

Answer:

Answer:

A cup of boiling water.

Explanation:

Due to their mobility, particles in a substance contain kinetic energy. The average kinetic energy of the particles increases with temperature.

Since hot water has the highest temperature of the available possibilities in this situation, it has the highest average kinetic energy. Compared to particles in icy water, warm water, or room temperature water, those in hot water are moving more quickly and possess more energy.

For instance, when hot water is compared to frozen water, the particles in the hot water are moving more quickly due to the higher temperature. The lower temperature of ice water causes the particles to move more slowly. A difference in average kinetic energy results from this difference in velocity.

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An ion is an atom ____.

Answers

It is an atom CHARGED.
I hope I helped! =D

What is water classified as

Answers

Water, or H2O, is a compound composed of the elements hydrogen (H) and oxygen (O).

What volume of carbon dioxide is produced when 0.489 mol of calcium carbonate reacts completely according to the following reaction at 0°C and 1 atm? calcium carbonate ( s ) calcium oxide ( s ) + carbon dioxide ( g )

Answers

Answer:

11.0L of carbon dioxide is produced

Explanation:

Balanced equation: $CaCO_(3)(s)\rightarrow CaO(s)+CO_(2)(g)$

According to balanced equation, 1 mol of $CaCO_(3)$ produces 1 mol of $CO_(2)$

So, 0.489 mol of $CaCO_(3)$ produces 0.489 mol of $CO_(2)$

Let's assume $CO_(2)$ behaves ideally.

So, $P_{CO_(2)}V_{CO_(2)}=n_{CO_(2)}RT$

where P is pressure, V is volume , n is number of moles, R is gas constant and T is temperature in kelvin

Plug-in all the values in the above equation-

$(1atm)* V_{CO_(2)}=(0.489mol)* (0.0821L.atm.mol^(-1).K^(-1))* (273K)$

or, $V_{CO_(2)}=11.0L$

So, 11.0L of carbon dioxide is produced

If the atomic radius of a calcium crystal is 180 pm, what is the length of the edge of the unit cell? (the calcium crystal forms

Answers

The edge length of a a unit cell of calcium crystal is 509.12 pm.

Structure of the Calcium crystals

Calcium crystal has a face center cubic (FCC) structure.

Edge length of the unit cell

The edge length of the unit cell for face center cubic (FCC) structure is given in the following formula;

a = 2r√2

where;

a is edge length
r is the radius

a = 2 x 180 x √2

a = 509.12 pm

Thus, the edge length of a a unit cell of calcium crystal is 509.12 pm.

Learn more about edge length here: brainly.com/question/11796119

Calcium crystal has a face center cubic (FCC) structure. For FCC structure,
relation between edge length (a) and radius (r) is
a = 2√2 r
Given: r = 180 pm
Therefore, a = 2√2 180
= 2 x 1.141 x 180
= 410.76 pm

The length of the edge of the Ca unit cell is 410.76 pm.

A physician has ordered 0.50 mg of atropine, intramuscularly. If atropine were available as 0.10 mg/mL solution, how many mL would u need to give?

Answers

x * 0.10 mg/mL = 0.50 mg

x = 0.50 mg / 0.10

x = 5.0 mL

hope this helps!

Which statement is true about a proton and an electron?(1) They have the same masses and the same charges.
(2) They have the same masses and different charges.
(3) They have different masses and the same charges.
(4) They have different masses and different charges.

Answers

Final answer:

Protons and electrons differ in both their masses and their charges. Protons have a larger mass and positive charge whereas electrons have a smaller mass and negative charge.

Explanation:

The correct answer to your question about proton and electron characteristics is option 4: They have different masses and different charges. To elaborate, a proton is a positive-charged particle found in an atom's nucleus with a relatively high mass. On the other hand, an electron is a negative-charged particle circling the nucleus, with a mass nearly 2000 times lighter than a proton. Thus, they both differ in their masses and in their charges.

Learn more about Proton and Electron here:

brainly.com/question/13131235

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Final answer:

The statement that is true about a proton and an electron is that they have different masses and different charges, which corresponds to option (4).

Explanation:

The correct statement about a proton and an electron is that they have different masses and different charges. Therefore, the answer to your question is (4) They have different masses and different charges.

Protons are subatomic particles found in the nucleus of an atom and have a positive electric charge. On the other hand, electrons are subatomic particles that orbit the nucleus of an atom and have a negative electric charge. The mass of a proton is significantly larger than the mass of an electron.

A proton's mass is about 1.6726 x 10-27 kilograms, which is nearly 1836 times the mass of an electron, which is approximately 9.109 x 10-31 kilograms.

Learn more about Proton and Electron Differences here:

brainly.com/question/35866909

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Which allotrope of carbon is used in lubricants, sporting goods, and aircraft?a. graphite b. diamond c. fullerene d. coal