Which is a correct comparison between the modern quantum model and john dalton’s model of the atom?
a. the modern model is not as widely accepted by scientists as dalton’s model.
b. the modern model states that atoms of all elements are identical, whereas dalton’s model does not.
c. the modern model recognizes particles in the atom, whereas dalton’s model does not.
d. the modern model does not explain emission spectra, whereas dalton’s model does.

Depends on your definition of the modern model. The one created by Neils Bohr differs from the quantum mechanical model.

For the Quantum mechanical model, A is untrue. The QM model is far more accepted than Dalton's because it explained the workings of the atom far better than any before.
For the NB model however, that was not accepted as much because it only worked when working with Hydrogen.

B: No model states that each atom is identical.

C: Dalton's model did NOT recognize particles in the atom, but the NB and QM models do.

D: The reverse is true.

So the answer is C.

29.1-12=17.1the answer is this one

Ch4 is nonpolar and insoluble in water. since all of the hydrogen atoms are evenly spread around the carbon atom even through the c h bond is polar all the poles cancel each other out.