Other Chemistry Answers

Calculate the mass in grams of tretinoin products containing 60 mL and 0.010% tretinoin solution. Consider a 100 mL solution formulation.

Calculate the mass in grams of tretinoin products containing 60 mL and 0.025% tretinoin solution. Consider a 100 mL solution formulation.

Calculate the mass in grams of hydroquinone products containing 60 mL and 2% hydroquinone solution. Consider a 100 mL solution formulation.

Calculate the volume of alcohol present in this solution containing 11.5% vol and 750 ml. Also, determine the proof number. Consider a 100 ml volume formulation of the solution.

Calculate the mole fraction of each component in this solution (Zinc Oxide = 12.90 g, Benzoic Acid = 4.50 g, Sulfur = 3.40 g, Salicylic Acid = 1.87 g). Consider a 100 g formulation mass of the solution.

1)   A solution contains 11.20 g of benzoic acid, HC₇H₅O₇, dissolved in 90 g of benzene, C₆H₆. Calculate the boiling point of the solution.

2)   Finding the molar mass from the boiling point elevation. A solution of 7.50 g of a non-volatile compound in 22.60 g of water boils at 100.78 ⁰C at 1 atm.