34. The mass of iron (III) chloride hexahydrate, FeCl3.6H2O, required to prepare 0.5 dm³ of 0.40 M solution is? Show your workings in dimensional analysis! A. 11 g
B. 22 g
C. 32 g
D. 54 g

Given sno2 + 2h2 - sn + 2h20 tin oxide reacts with hydrogen to produce tin and water. how many moles of sno2 are needed to produce 500.0 grams of sn?

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next

Which statement describes the phase change that occurs when dry ice is placed in an open container at room temperature?