An aqueous solution has 0.0086 g of oxygen dissolved in 2.5 L of water. Calculate the dissolved oxygen concentration of this solution in parts per million.
- What mass of solute, in mg is present in a 250 mL sample of potassium chloride solution with a concentration of 7.2 ppm?
- Any shipment of peanuts that contains more than 25 ppb of this dangerous fungus is rejected. A company receives 15 t of peanuts to make peanut butter . What is the maximum mass, in grams, of fungus that is allowed?
- In many areas, the drinking water standard for nitrate ions is 5.00 ppb. Calculate the mass in yg, of nitrate ions allowed in one glass of 345 mL of tap water