One student burned a piece of paper weighing 4.8 grams. The table below shows the mass of the materials formed by burning the paper. What is most likely the mass of the ash formed on burning the piece of paper?
Ash- ?
Smoke-2.2
Dust-2.5

A)0.1 grams
B)0.3 grams
C)4.6 grams
D)4.7 grams

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

How are evaporation and sublimation similar? a both involve the formation of a gas. b both release energy to the surroundings. c both take place throughout a solid. d both take place at the surface of a liquid.

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.