A250 cm^3 solution containing 1,46 g of sodium chloride is added to an excess of silver nitrate solution. the reaction is given. nacl (aq)+agno, (aq)-agci(s)+nano, (aq) what is the concentration of the sodium chloride solution? (4) 7.1 calculate the mass of the precipitate. 7.2 (4) 18

What is the temperature of one mole of helium gas at stp?

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 of the following would have less momentum than a 52 kg cheetah running at 10 m/s?