General Chemistry Answers

Calculate the vapor pressure lowering for a solution prepared at 25ºC by adding 50.0 mL of the nonvolatile glycerine (C₃H₈O₃, 92.1 g/mol, density 1.26 g/mL) to 500 mL of water (H₂O, 18.0 g/mol, density 1.00 g/mL). The vapor pressure of pure water at 25ºC is 3.17 kPa.

An Olympic-size pool is 50.0 m long ang 25.0 m wide. How many gallons of water (density = 1.0 g/mL) are needed to fill the pool to an average depth of 4.8 ft?

 Calculate pH of a 0.350 L solution that was prepared by dissolving of 2.9 g of Mg(OH)2

Determine the equilibrium constant (kc) for the synthesis of PCl5 from PCl3 and Cl2 (PCl3 +Cl2 ⇌ PCl5)

The artificial sweetener aspartame formula C14H18N2O5 is used to sweeten foods. How many moles of aspartame are present in 225 g of aspartame.

CPH4 is a synthetic drug that develops extraordinary mental and paranormal abilities. How many moles of CPH4 are present in 1500 grams of CPH4

how many grams of nacl must be weighted in order to make 250 ml of 10% nacl solution

how many atoms are there in 45g of O2

Suppose you start with 1.000 g of an unknown copper compound and isolate 0.9794 g of metallic copper. What is the formula weight of the compound if there is only one copper atom per unit formula?

a system releases 622kJ of heat and does 105 kJ of word on the surroundings. what is the change in internal energy of the system?