7. A sketch of Rutherford's equipment setup and observations is reproduced below
(Gold foil experiment - Tootsie Pop candy representation). Which observation let him
to conclude that the atom contained a nucleus?
gold foil
radiation
radioactive
source
ZnS screen
backward scattering
Forward scattering
a. backward scattering only
b. forward scattering only
c. both forward and backward scatterina

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

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al oxidizing agent = reducing agent =

Which sample at stp has the same number of atoms as 18 liters of ne at stp