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3 years ago

What do you think would happen if you had a very small amount of water in a glass and you

Chemistry

1 answer:

Ipatiy [6.2K]3 years ago

8 0

If it was warn - hot water, i would say yes

the warm - hot water would dissolve because of the temperature

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What are the basic properties of the outer shell of an element?

crimeas [40]

The number of electrons in the outermost shell of an atom determines its physical and chemical properties. All elements are most stable with 8 electrons (an octet) in their outer shell.

Hope this helps!!

7 0

3 years ago

In the reaction C7H16+ ______ O2 --> 8H2O + 7CO2,

sammy [17]

11.

С7Н16 + 11О2 --> 8Н2О + 7СО2

3 0

3 years ago

According to the kinetic molecular theory, which statement describes the particles of an ideal gas? -1)The gas particles are arr

avanturin [10]

Answer: option # 4, the collisions of the gas particles may result in the transfer of energy.

Explanation:

The kinetic molecular theory (KMT) explains the behavior and properties of gases in terms of the energy, the size, and the motion of the gas particles.

In terms of size, according to the KMT the gases are formed by small particles separated from each other in a vacuum. The volume of the particles is negligible and it is considered that they do not occupy any space.

Since the particles are separated they do not exert either attraction or repulsion to each other.

Regarding the motion, the particles are in constant random motion. They move in straight lines until collide with other particles or with the walls of the veseel. The collisions are elastic (the total kinetic energy is conserved). The kinetic energy may be trasferred between the particles, but the total kinetic energy does not change.

The kinetic energy and the temperature are related: the temperature is a measure of the average kinetic energy of the particles of gas. At a given temperature all the gases have the same average kinetic energy.

Now, check every choice:

1)The gas particles are arranged in a regular pattern:

False. The particles occupy all the volumen and are in random motion.

2) The force of attraction between the gas particles are strong:

False. The particles are separated and they do not exert any force on each other.

3) The gas particles are hard spheres in continuous circular motion.

False. The particles travel in straight until they collide.

4) The collisions of the gas particles may result in the transfer of energy.

True. When particles collide they may transfer kinetic energy but the total kinetic energy is conserved.

4 0

3 years ago

A chemist dissolves 249.mg of pure perchloric acid in enough water to make up 380.mL of solution. Calculate the pH of the soluti

Alla [95]

Answer:

pH = 2.18

Explanation:

Perchloric acid (HClO₄) is a strong acid. This means that in an aqueous solution it completely dissociates into H⁺ and ClO₄⁻ species.

First we convert 249 mg HClO₄ into moles, using its molecular weight:

249 mg HClO₄ ÷ 100.46 mg/mmol = 2.49 mmol HClO₄

Because it is a strong acid, 2.49 mmol HClO₄ = 2.49 mmol H⁺

We calculate the molar concentration of H⁺:

2.49 mmol H⁺ / 380 mL = 6.52x10⁻³ M

Finally we calculate the pH of the solution:

pH = -log[H⁺] = -log(6.52x10⁻³)

pH = 2.18

4 0

3 years ago

Describe one chemical property of Group 1 metals that results from the atoms of each metal having only one valence electron.

sp2606 [1]

Their ability to lose that electron easily. This property is electronegativity. Once that electron is taken away, the atom becomes an ion with a charge of +1. The ion would be much more stable than the atom, because once the electron is lost, the shell underneath will already have 8 electrons that resembles the configuration of a noble gas.

4 0

3 years ago