Which of the following is true for an atom which has 29 protons, 34 neutrons and 29 electrons?

Atomic number Mass number

A. 29 34

B. 29 63

C. 34 63

D 34 29

Define intensive properties

How many significant digits are in the number 0.005

What is a possible explanation of a phenomenon that can be supported or disproved through a set of carefully

The radius of an atom of gold (Au) is about 1.35 Å. How many gold atoms would have to be lined up to span 5.5 mm?

Why do the two elements silver and iron have different properties?

A base a. causes phenolphthalein indicator to change from colorless to pink. b. donates a proton in a proton transfer reaction. c. accepts electrons in an electron transfer reaction. d. produces hydrogen ions in solution. e. does none of the above.

Which of these is an indicator that a chemical reaction has occurred? precipitate forms temperature remains the same color is diluted mass increases

The half-life of isotope X is 3 days, how long will it take for one half of 10g sample to decay

A 69.1-g sample of h2o contains how many molecules of water?

Why is ac used instead of dc