0.45g sample of mineral ore is analyzed for chromium and found to contain 0.560mg Cr 2 O 3 . Express the concentration of Cr 2 O 3 in the sample as: (a) Percent (%) (b) Parts per thousand (ppt) (c) Parts per million (ppm) (d) Parts per billion (ppb)

Some familiar products contain some of the same types of atoms. for instance, the chemical formula for baking soda is nahco 3. the chemical formula for liquid bleach is naclo, and the chemical formula for table salt is nacl. which choice best describes why these three products have some of the same types of atoms in common?

How many liters of 3.0 m naoh solution will react with 0.60 liters of 4.0 m h2so4? h2so4 + naoh → na2so4 + h2o 1.2 l 1.6 l 2.4 l 2.8 l

Idont understand it 1.what is the boiling point of a solution of 675 grams of ethylene glycol (c2h6o2) in 2.50 liters of water?