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Nastasia [14]
3 years ago
14

A solid substance formed from a solution is a(n)

Chemistry
2 answers:
Charra [1.4K]3 years ago
3 0
<h2>Question:</h2>

A solid substance formed from a solution is a(n).

<h2>Answer:</h2>

<u>D</u><u>.</u><u> </u><u>Precipitate</u><u> </u>

<h2><u>#CARRYONLEARNING</u><u> </u></h2><h2><u>#STUDYWELL</u><u> </u></h2>
vazorg [7]3 years ago
3 0
<h2>Question:</h2>

A solid substance formed from a solution is a(n)

<h2>Choosing:</h2>

a. reactant

b. equation

C. compound

d. precipitate

<h2>Answer:</h2>

<u>D</u><u>.</u><u> </u><u>Precipitate</u><u> </u>

<h3><u>#READINGHELPSWITHLEARNING</u><u> </u></h3><h3><u>#CARRYONLEARNING</u><u> </u></h3><h3><u>#STUDYWELL</u><u> </u></h3>
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4 years ago
A sample of an ideal gas has a volume of 2.31 l at 287 k and 1.10 atm. calculate the pressure when the volume is 1.45 l and the
balu736 [363]
Hello!

The pressure of the Ideal Gas when the volume is 1,45 L and the temperature is 298 K is 1,82 atm.

To solve this problem we need to apply the Ideal Gas Law for the initial conditions and the final ones, clearing the equation for the number of moles (n) and the ideal gas constant (R) which remain constant:

P_n*V_n=n*R*T_n \\ \\ n*R= \frac{P_n*V_n}{T_n}

Now we match n*R for the initial conditions (1) and the final ones (2), clearing the equation for P₂

\frac{P_1*V_1}{T_1}= \frac{P_2*V_2}{T_2} \\ \\ P_2= \frac{P_1*V_1*T_2}{T_1*V_2}= \frac{1,10 atm*2,31 L *298 K}{287K*1,45 L}=1,82 atm

Have a nice day!

7 0
3 years ago
Which statement best describes the collisions of gas particles according to the kinetic-molecular theory?
kvv77 [185]

Answer: option B. As particles travel in straight lines, their paths sometimes meet, and then they bounce apart with no gain or loss of energy.

Explanation:

The kinetic-molecular theory explains the the properties and behavior of the gases in terms of the energy, size, and motion of the particles that form the gases.

According to this model, the gas particles are in constant random motion. The particles travel in straight line until they collide either with other particles or with the walls of the vessel. Such collisions are elastic, meaning that energy is not either gain or loss. Therefore, this theory does not consider either attractions or repulsions between the particles. The particles bounce apart and the total kinetic energy is conserved.

5 0
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Answer:

pH=5

Explanation:

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it combines with the water and H in the atmosphere and creates sulfuric acid thus making the rain acidic

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