If the mole fraction of NaCl in an aqueous solution is 0.0927, what is
the weight/weight % (percent by
mass) of Naci.
Molar Mass
NaCl: 58.44 g/mol
H2O: 18.016 g/mol

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

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

Stage in which a star’s outer layers have started to cool and grow outward?