Arectangular piece of aluminum foil (density = 2.700 g/cm*3) is 25.70 cm wide and 28.32 cm long. it has a mass of 7.291 g. what is the thickness of the foil (height) in cm? put answer in correct sig fig.

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?

Adrop of acetone (nail polish remover) has a mass of 35 mg and a density of 0.788 g/cm3. what is its volume in cubic centimeters?

Write the formula for the following chemicals. 7. e. trinitrogen tetraoxide a calcium phosphate f. magnesium acetate b. potassium sulfide g nickel(iii) cyanide c carbon dioxide h. silver sulfate d. cobalt(ii) chloride