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statuscvo [17]
3 years ago
14

An increase in the temperature of a solution usually: a)increases the boiling point. b)increases the solubility of a gas in the

solution. c)increases the solubility of a solid solute in the solution. d)decreases the solubility of a solid solute in the solution. e)decreases the solubility of a liquid solute in the solution.
Chemistry
1 answer:
irina [24]3 years ago
7 0

Answer: Option (c) is the correct answer.

Explanation:

Relation between kinetic energy and temperature is as follows.

                      K.E = \frac{3}{2}kT

Since, kinetic energy is directly proportional to temperature. So, when there will be increase in temperature then this will also lead to increase in kinetic energy of the molecules of a substance.

So, when a solid substance is dissolved in a solution whose temperature is increased then molecules of the solid will also gain kinetic energy. As a result, more number of collisions will occur due to which bond between the molecules of solid will break.

Therefore, there will be increase in solubility of the solid.

Thus, we can conclude that an increase in the temperature of a solution usually increases the solubility of a solid solute in the solution.

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3 years ago
Which statement describes the differences between chemical reactions and nuclear decay rates? Chemical reaction rates vary, but
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Answer:

Answer the last one Nuclear decay rates vary, but chemical reaction rates are constant

Explanation:

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(50 POINTS, PLEASE HELP!!) Go back and read the goals for this lesson on page 1. Form a summary statement for each goal, showing
kakasveta [241]

Answer:

An atom is made of up subatomic particles called protons, neutrons and electrons. The center of an atom is called the nucleus and is where the protons and neutrons are held while electrons orbit the nucleus in orbital shells. A electron has a negative charge, a proton has a positive charge, and a neutron has no charge (neutral).

The atomic number of a atom is the total amount of the atom's protons. In a neutral atom (Not an ion), the amount of electrons is the same as the protons. Therefore, the atomic number also tells the amount of electrons in the atom.

A ion is a negatively or positively charged particle due to the giving or taking of electrons with one or more atoms (Called an ionic bond). An atom that gives away electrons becomes positively charge because that atom now has more protons than neutrons. An atom that takes an electron becomes negatively charge because that atom now has more electrons than protons.

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6 0
2 years ago
A certain isotope has 53 protons 78 neutrons and 53 electrons. What is its atomic number? What is the mass number of this atom?
statuscvo [17]

Answer:

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  3. Iodine
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Explanation:

atomic no. = no. of protons

= 53 proton

mass = no. of protons + no. of

neutrons

= 53 + 78

= 131

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As water is cooled from 4º C to 0°C, its density
frosja888 [35]

Answer:

decreases

Explanation:

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