Dido, The mathematician. She was an ancient queen of Carthage. If she never existed, our world would have been totally different, for example, the progenitors of the founders of Rome would have been different. Maybe Rome would even not have been founded.
S contains m1 and s1 which contains m2. S = Earth.
m1 = Iron; mass = 25 grams; temperature = 160oC.
s1 = an insulated container.
m2 = water; mass = 125 grams; temperture = 20 oC.
(a) How much heat is lost if m1 cools from 160oC to 100oC?
(b) Suppose after m1 has cooled to 100oC, it is dropped into m2. What will be the final temperature of the water?
S contains s1 which contains a base m1 and an acid m2. S = Earth, s1 = a beaker, m2 = nitric acid (HNO3).
Volume of m1 = v; normality = 0.3 N
Volume of m2 = 2 liters; normality = 0.01 N
Determine the value of v necessary to neutralize the nitric acid.
S contains s1 which contains a 500 ml solution of m1 and m2. S = Earth, s1 = a beaker,
m1 = 10 grams of sulphuric acid (H2SO4).
m2 = 165 grams of water (H2O).
Determine the following with respect to the solution:
(a) The solute and the solvent
(b) The Molarity (c) Molality (d) Normality (e) Formality
(f) What is the molarity of sodium ions in human blood serum if there are about 3.4 g of sodium ions (Na+) in 1 liter of human blood serum.