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:)

The pressure inside a hydrogen-filled container was 2.10 atm at 21 ? c. what would the pressure be if the container was heated to 92 ? c ?

Which characteristic of water it form droplets? a. low specific heat b. nonpolar structure c. high surface tension d. ability to dissolve substances

Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat