Answer: matter and its interaction with energy. Matter has mass and occupies space. A Substance is matter that cannot be separated into other kinds of matter by physical means.
Explanation:
with his well-known gold foil experiment in which he demonstrated that the atom has a tiny and heavy nucleus.
Flat character -we don’t know much about mud other that it’s describing it doesn’t have feelings it doesn’t develop
Answer:
W and X
Explanation:
isotopes : are masses of atoms with the same number of proton and electron but different neutron .
W and X have the same number of protons and different number of neutrons.
We find the work function per atom e = E/N = 419000/6.023E23 = hf = photon energy; solve for the frequency, using N = 6.023E23 atoms per mole and Planck's h = 6.63E-34 J.s:
f = E/Nh = 419000/(6.023E23*6.63E-34) = 1.04927E+15 = 1.05E15 cps IS THE ANSWER, HOPE IT HELPED :)
