What the first questions answer? Anyone know if so plz help a siesta out

"the order-of-magnitude of the diameter of an" atom is closest to

marissa [1.9K]

The standard size of an atom is <span>1 X 10 -8 cm.
hope I helped :)</span>

5 0

4 years ago

If the pressure of a 2. 00 L sample of gas is 50. 0 kPa, what pressure does the gas exert if its volume is decreased to 20. 0 mL

N76 [4]

The equation used for the calculation is P subscript 1 V subscript 1 equals P subscript 2 V subscript 2. Thus, option B is correct.

The pressure of the gas with respect to volume is given with inverse proportion. The ideal gas equation is given as:

$PV=nRT$

<h3>Equation for relation between volume and pressure</h3>

The initial pressure of the gas has been given as, $P_1=50\;\rm kPa$

The initial volume of the gas has been, $V_1=2\;\rm L$

The final volume of the gas has been, $V_2=0.02\;\rm L$

The final pressure of the gas, $P_2$ is given as:

$P_1V_1=P_2V_2\\\\P_2=\dfrac{P_1V_1}{V_2}$

Thus, the equation used for the calculation is P subscript 1 V subscript 1 equals P subscript 2 V subscript 2. Thus, option B is correct.

Learn more about ideal gas, here:

brainly.com/question/8711877

3 0

3 years ago

At a high concentration do you have more or less particles per unit volume

Whitepunk [10]

Answer:

More particles per unit volume

Explanation:

Concentration means the amount of solute in a solution. Now, the amount of solute also means the number of particles of solute present in a solution.

Hence, when we use the term "high concentration", we imply that the amount of solute present or the number of particles present in a solution is high.

Thus, at high concentration, there are more solute particles than solvent particles in a solution.

3 0

3 years ago

Which of the following represents an increase in kinetic energy?

Tom [10]

Answer:

C

Explanation:

5 0

3 years ago

A group of organisms of the same species that live in an area is called a(n

Allushta [10]

A population is a group of individuals of the same species living in a particular area at the same time.

<h3>What is the population?</h3>

The whole number of people or inhabitants in a country or region.

A population is the number of living people that live together in the same place. A city's population is the number of people living in that city. These people are called inhabitants or residents. The population includes all individuals that live in that certain area.

Hence, a group of organisms of the same species that live in an area is called a population.

Learn more about the population here:

brainly.com/question/15976891

#SPJ1

5 0

2 years ago