Which is the closest synonym for the word additive, as it is used in the Article? Alternative
B. Poison
C. Byproduct
D. Ingredient

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?

If you have 5.25 grams of methane (ch4), how many grams of co2 will you produce ?

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?