Calculate the concentration of all ions present when 0.160 g0.160 \mathrm{~g}0.160 g of MgCl2\mathrm{MgCl}_2MgCl2 is dissolved in enough water to make 100.0 mL100.0 \mathrm{~mL}100.0 mL of solution.
Determine the required transformation temperature and microconstituent if a eutectoid steel is to have the following hardness values: (a) HRC 38; (b) HRC 42; (c) HRC 48; and (d) HRC 52 .
A hairdryer is designed to produce 1200 W1200 \mathrm{~W}1200 W of heating power. It draws a maximum instantaneous current of 14 A14 \mathrm{~A}14 A. Find (a) the maximum instantaneous power, (b) the RMS current, (c) the RMS voltage, and (d) the resistance of the hair dryer.
Classify each of the following bonds as nonpolar covalent, polar covalent, or ionic on the basis of electronegativity differences.
a. C-O
b. Na-Cl
c. C-I
d. Ca-S
