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3 years ago

Each energy level of an atom has a maximum number of ____ it can hold.

1 answer:

8 0

D. electrons because each energy level can hold a set amount. The first can hold 2. also the outermost electrons is called the valence electrons.

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Need the answer ASAP

wolverine [178]

Answer:

Explanation:

8 0

3 years ago

An unknown quantity of methane gas, CHA, is held in a 2.00-liter container at 77°C. The pressure inside the container is 3.00 am

kolbaska11 [484]

Answer:

$0.21\text{ mol}$

Explanation:

Here, we want to calculate the number of moles of methane in the container

From the ideal gas law:

$\begin{gathered} PV\text{ = nRT} \\ n\text{ = }\frac{PV}{RT} \end{gathered}$

where:

P is the pressure inside the container which is 3 atm

V is the volume of the container which is 2 L

R is the molar gas constant which is 0.0821 Latm/mol.k

T is the temperature in Kelvin (we convert the temperature in Celsius by adding 273 : 273 + 77 = 350 K)

n is the number of moles that we want to calculate

Substituting the values, we have it that:

$n=\text{ }\frac{3\times2}{0.0821\text{ }\times350}\text{ = 0.21 mol}$

6 0

1 year ago

A sealed vessel contains 0.200 mol of oxygen gas, 0.100 mol of nitrogen gas, and 0.200 mol of argon gas. The total pressure of t

babunello [35]

Answer:

Explanation:

We can use the mole ratio to calculate the partial pressure. The total number of moles is 0.2 + 0.2 + 0.1 = 0.5 moles

Now, we know that the mole fraction of the argon gas would be 0.2/0.5

The partial pressure is as follows. To calculate this, we simple multiply the number of moles by the total pressure.

0.2/0.5 * 5 = 1.0/0.5 = 2.00atm

8 0

3 years ago

Which of the following statements is false?

luda_lava [24]

Two or more different elements bonded together form a compound, I think.

5 0

3 years ago

Explain the composition of the periodic table

Hoochie [10]

The composition of the periodic table is made up of periods and groups. the table arranges the chemical elements based off of the atomic numbers, chemical properties and electron configuration.

3 0

3 years ago