*multiple choice*
What is the molarity of a 45.3g sample of KNO3 (101g) dissolved in enough water to make a 0.225L solution?

a) 0.45
b) 2
c) option 3
d) none of the above

1.95  or 2  is the molarity of a 45.3g sample of KNO3 (101g) dissolved in enough water to make a 0.225L solution.

The correct answer is option b

Explanation:

Data given:

mass of KN = 45.3 grams

volume = 0.225 litre

molarity =?

atomic mass of KNO3 = 101 grams/mole

molarity is calculated by using the formula:

molarity =

first the number of moles present in the given mass is calculated as:

number of moles =

number of moles =

0.44 moles of KNO3

Putting the values in the equation of molarity:

molarity =

molarity = 1.95

It can be taken as 2.

The molarity of the potassium nitrate solution is 2.

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.

the cold front replaces the warmer air at the ground level changing the wind to be breezy and denser.there is also an immediate drop in the temperature.