Find the number of atoms in 3.25 moles of gold Determine the moles if given 20.3g of beryllium.

Find the number of atoms given 82.4g of silicon.

Determine the molar mass of formic acid (CH2O2). Round to two decimal places.

What is the mass in grams of 1.22 moles of lead (II) nitrate ? (Pb(NO3)2 molar mass = 331.22g/mol)

Find the number of stars given 0.134 squares.

2.5 rectangles = 5 triangles
6 rectangles = 3 squares
8 triangles=12 stars

Any help is appreciated:)