What is the molarity of 3.7 moles of KBr dissolved in 2 L of water?

The molarity is : 1, 85M

Explanation:

The molartity is moles of compound (in this case KBr) in 1 liter of solution :

2 L3, 7 moles KBr

1 L..x= (1L x3, 7 moles KBr)/2L= 1,85 moles KBr--> 1,85M

 The molarity is 1.85M  solution.                  

Explanation:

Molarity:

Molarity is defined as the molar concentration of a solution measured in moles of solute per liter of solution.

Given:

moles = 3.7

solution = KBr  dissolved in 2L of water

To calculate: molarity  

The formula of molarity:

Molarity= moles of solute/liters of solution

Solution:

Molarity= 3.7/2      

molarity= 1.85M solution

Therefore molarity of 3.7 moles of KBr dissolved in 2 L of water is 1.85M solution.              

d.) the average kinetic energy of the gas particles is greater in container b because its particles move faster.

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.