How many grams of potassium nitrate (kno3) would form if 2.25 liters of a 1.50 molar lead nitrate pb(no3)2 solution reacts with 1.15 liters of a 2.75 molar potassium chromate k2cro4 solution? pb(no3)2 + k2cro4 pbcro4 + 2kno3 108 g 681 g 639 g 362

What best discribes the relationship between wavelength and frequency in a electromagnetic wave

Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.

What is the formula of the ionic compound composed of calcium cations and chloride anions