1 Which of the following is a true statement
about atomic nuclel?
A They are made up of protons, neutrons, and electrons
B They have
net positive charge
C Every atomic nucleus has the same number of particles
D
The atomic nucleus has no relation to an atom's mass

Which of the following is a compound? a. carbon b. oxygen c. hydrogen d. water

Sylvanite is a mineral that contains 28.0% gold by mass. how much sylvanite would you need to dig up to obtain 77.0 g of gold? explain how you got your answer and the steps you took. you

100 points answer quick the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 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.