General Chemistry Answers

If 0.590% solution of Na₂CO3 will be used to precipitate Ca⁺² from solution, determine the amount of solution, in grams needed to percipitate 5.00x10²mL of 0.01120M Ca⁺²

25.0 grams of sodium chloride (NaCl) is dissolved in 100 grams of solution. What is the concentration of the solution in parts per million (ppm)?

Suppose 17 grams of sucrose is dissolved in 183 grams of water. What is the concentration of sucrose ppm?

How does iron binding by polyphenols provides antioxidant, antibacterial and anticancer effects?

What is the molality of a solution formed from 29.1 g of C7H8 (toluene) dissolved in a 832 g of benzene (C6H6)?

1. 0.315 moles of butane (C₄H₁₀) was burned in a copper calorimeter containing 4500 g of water. The calorimeter weighs 2,500 g. The temperature was observed to increase by 3.15 °C. Calculate the molar heat of combustion of butane (HEAT OF COMBUSTION PER MOLE). The specific heat of copper and water are 0.386 J/g. °C and 4.18 J/g. °C respectively.

What mass of argon gas, Ar, is in a 30L scuba tank of the temperature of the tank is 27 degrees Celsius and the pressure inside is 200 atm

Silver has a face-centered cubic unit cell. How many atoms of Ag are present in each unit cell?

Calculate the amount of heat released during the combustion of

a. 0.75 mole of C3H6O

b. 120g of C3H6O

ammonia gas occupies a volume of 150mL at a pressure of 720 torr. what volume will it occupy at standard pressure (standard pressure::760 torr)