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ZanzabumX [31]
3 years ago
11

Which of the following is teue of solids? A. They have less kinetic energy than liquids, gases, and plasmas. B.They have slightl

y less kinetic energy than liquids, but more kinetic energy than gases or plasmas. C. They have slightly more kinetic energy than liquids, but less kinetic energy than gases or plasmas. D. They have more kinetic energy than liquids, gases, and plasmas.
Chemistry
1 answer:
Oksi-84 [34.3K]3 years ago
8 0
The correct answer is A because particles in solids are packed more compactly than those in liquids, gases, and plasmas, due to the decreased kinetic engergy

Hope this helps
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What happens when an electron jumps energy from energy level 3 energy level 6 in an atom
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Explanation:

high energy to Low energy

=the electron gains energy (K.E)

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2 years ago
Considering particles at the subatomic level, carrying out this experiment would help to identify the metals given that: Ca has
svet-max [94.6K]

Answer:

we can do it again and again and again and again and again and again

4 0
3 years ago
A gas used to extinguish fires is composed of 75 % CO2 and 25 % N2. It is stored in a 5 m3 tank at 300 kPa and 25 °C. What is th
tatyana61 [14]

Answer : The partial pressure of the CO_2 in the tank in psia is, 32.6 psia.

Explanation :

As we are given 75 % CO_2 and 25 % N_2 in terms of volume.

First we have to calculate the moles of CO_2 and N_2.

\text{Moles of }CO_2=\frac{\text{Volume of }CO_2}{\text{Volume at STP}}=\frac{75}{22.4}=3.35mole

\text{Moles of }N_2=\frac{\text{Volume of }N_2}{\text{Volume at STP}}=\frac{25}{22.4}=1.12mole

Now we have to calculate the mole fraction of CO_2.

\text{Mole fraction of }CO_2=\frac{\text{Moles of }CO_2}{\text{Moles of }CO_2+\text{Moles of }N_2}

\text{Mole fraction of }CO_2=\frac{3.35}{3.35+1.12}=0.75

Now we have to calculate the partial pressure of the CO_2 gas.

\text{Partial pressure of }CO_2=\text{Mole fraction of }CO_2\times \text{Total pressure of gas}

\text{Partial pressure of }CO_2=0.75mole\times 300Kpa=225Kpa=225Kpa\times \frac{0.145\text{ psia}}{1Kpa}=32.625\text{ psia}

conversion used : (1 Kpa = 0.145 psia)

Therefore, the partial pressure of the CO_2 in the tank in psia is, 32.6 psia.

3 0
3 years ago
a 1.642 g sample of calcium bromide is dissolved in enough water to give 469.1 mL of solution what is the bromide ion concentrat
aleksklad [387]

The bromide concentration in this solution of calcium bromide dissolved in enough water to give 469.1 mL is 1.75 × 10-⁵M.

<h3>How to calculate concentration?</h3>

The concentration of a solution can be calculated by dividing the number of moles of the substance by its volume.

No of moles of calcium bromide is calculated as follows:

moles = 1.642 ÷ 199.89 = 8.215 × 10-³moles

Molarity = 8.215 × 10-³moles ÷ 469.1mL = 1.75 × 10-⁵M

Therefore, the bromide concentration in this solution of calcium bromide dissolved in enough water to give 469.1 mL is 1.75 × 10-⁵M.

Learn more about concentration at: brainly.com/question/10725862

#SPJ1

4 0
2 years ago
List 2 of the important properties of gases​
horrorfan [7]

Answer:

pressure, temperature and volume

Explanation:

3 0
3 years ago
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