4. The average kinetic energy of water molecules is greatest inO liquid water at 273 K
O ice at 0°C
O liquid water at 90°C
O steam at 100°C

Answers

Answer 1

Answer:

The average kinetic energy of water molecules is greatest in steam at 100°C.

Kinetic energy of water

Water is a polar solvent that has potential energy on its own which can be converted to kinetic energy once the water is in motion.

The kinetic energy is that energy that a moving body possesses.The faster a molecule moves, the more kinetic energy it has, and the higher the measured temperature.

That being said, when the temperature of water is increased, there would be increased molecular motion leading to a higher kinetic energy.

Therefore, the average kinetic energy of water molecules is greatest in steam at 100°C.

Learn more about kinetic energy here:

brainly.com/question/25959744

Answer 2

Answer:

Answer:

steam at 100°C

Explanation:

Grandpoint approved

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What are Valence Electrons?

Answers

Valence electrons are the electrons that are in an atom's outermost layer.
Every atom is made of protons, neutrons, and electrons.
Electrons are outside them both.
They have energy levels (number of electrons per layer)
And the number they have on the farthest layer are the valence electrons.

Valence Electrons are electrons in the outermost lay. They are also involved in the bonding of adjacent atoms.

Hope I helped (:

Which elements are metalloids? Check all that apply.boron
tungsten
aluminum
bismuth
silicon
tellurium

Answers

Answer:

Boron
Silicon
Tellurium

Explanation:

Elements in the periodic table are either metals, non-metals or metalloids.
Metals are elements that react by losing electron(s) to attain an octet configuration. They occupy groups I, II and III of the periodic table and the transition metals.
Non-metals, on the other hand, are elements that react by gaining electron(s) to attain a stable configuration. Examples include halogens and noble gases among others.
Metalloids are elements in the periodic table that have the properties of both metals and non-metals.
Other examples of metalloids are arsenic, tellurium, germanium and polonium.

Answer:

Boron

Silicon

Tellurium

Explanation:

edgenuity

Describe a test to determine whether an object is charged or uncharged.

Answers

What do you mean ???????

What is the charactics of igneous

Answers

Igneous rocks are formed in the magma chamber
There are always crystals* in these rocks
There are no fossils
There are Grains in these rocks
There is no sign of stratification in these rocks
Igneous rocks does not react with acids.

*The size of the crystals depend on the speed of crystalization
Slow crystalization would result in large crystals and vice versa for slow crystalization.
Hope it helps :D

The unstable nucleus that breaks apart is called ____A) Daughter Nucleus
B) Parent Nucleus
C) Beta Particle
D) Alpha Particle

Answers

The answer is B) parent nucleus

What is the pH of a solution with (H3O+)=5.6x10-2M?

Answers

Answer:

Explanation:

Given parameters:

Concentration of H₃O⁺ = 5.6 x 10⁻²M

Solution:

To solve for the concentration of H₃O⁺ in the solution, we simply use the expression below:

pH = -log₁₀[H₃O⁺]

where [H₃O⁺] = 5.6 x 10⁻²M is the concentration of H₃O⁺

pH = -log₁₀[5.6 x 10⁻²] = - x -1.25 = 1.25

Answer:

1.25 is the pH of the given solution

Explanation:

We can determine the acidity or the basicity of the solution using the pH value.

The solution is acidic if the pH value ranges from 0 to 6.9

The solution is Basic if the pH value ranges from 7.1 to 14

The solution is neutral if the pH value is 7.

pH is defined as the negative logarithm of the Hydrogen ion concentration, that’s why the formula to find pH is given by

$pH=-log[H^+]$

$pH=-log[H_3O^+]$

$pH=-log[5.6*10^(-2) M]$

$=-(1.25)$

$pH=1.25$

(Answer)

Please note:

When an hydrogen atom loses an electron, Hydrogen ion is formed, which will contain 1 positive proton and 0 negative electron and 0 neutral neutron.

Thus Hydrogen ion has a + charge.

Hydrogen ion is also called as a proton since it has only 1 proton in it.

Hydrogen ion in water that is,

$H^++H_2 O> H_3 O^+$