Question

A student wants to measure out a 0.163 mol sample of barium fluoride (BaF2). How many grams of is this?

Additional Information:
If needed, Molar Mass of BaF2 is 175.34 g/mol
If needed use 6.022 x 1023 for Avogadro's number.
Format your answer:
With three significant figures
Include the correct unit.

Answer 1

28.6 grams BaF₂

Step-by-step explanation:

To find the amount of BaF₂ in grams, you need to multiply the given value (moles) by the molar mass. The molar mass is a ratio which describes the mass (g) of BaF₂ per every 1 mole. It is important to arrange the ratio in a way that allows for the cancellation of units (moles should be in the denominator).

Molar Mass (BaF₂): 175.34 g/mol

0.163 moles BaF₂ 175.34 grams
---------------------------- x ----------------------- = 28.58042 = 28.6 grams BaF₂
1 mole