Calculate the mass of calcum oxide formed
When 1.5g of calcium is
is completely burnt in
oxygen Ca+ O2 -> CaO

Llama have 74 chromosomes how many chromosomes will they be found in their gametes explain how you know

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

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure