120 grams of calcium nitrite ca(no2)2 is dissolved in a 240 ml solution. what is the molarity of the

Hey there!:

Molar mass Ca(NO2)2 = 132.089 g/mol

Mass of solute = 120 g

Number of moles:

n = mass of solute / molar mass

n = 120 / 132.089

n = 0.0009084 moles of Ca(NO2)2

Volume in liters of solution :

240 mL / 1000 => 0.24 L

Therefore:

Molarity = number of moles / volume of solution

Molarity = 0.0009084 / 0.24

Molarity = 0.003785 M

Hope that helps!

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

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4d^55s^1 ( third choice)