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What do you think will happen if you put salt on ice cudes?
What do you think happens to the property of a liquid once a solid is dissolved in it?
Enumerate at least three applications of surface tension and viscosity in real life.
Calculate the molarity, molality, and mole fraction of NH3 for a solution of 30.0 g NH3 in 70.0 g H2O. The density of the solution is 0.982 g/mL.
The concentrated sulfuric acid that we use in the laboratory is 98.0 % H2SO4 by mass. Calculate the molality and molarity of the solution. The density of the solution is 1.83 g/mL.
Calculate the percent by mass of the solute in each of these aqueous solutions:
a) 5.50 g NaBr in 78.2 g solutiom
b) 31.0 g KCl in 152 g water
As a liquid is heated at a constant temperature, its temperature rises. This trend continues until the boiling point of the liquid is reached. No further rise in the temperature of the liquid can be induced by heating. Explain.
Why is solid carbon called dry ice?
Explain why diamond is harder than graphite. Why is graphite an electrical conductor but diamond is not?
Why are metals good conductors of heat and electricity? Why does the ability of a metal to conduct electricity decrease with increasing temperature?
