Sodium (Na) has 11 protons and 12 neutrons. What is its isotope notation?

A. Na-11

O B. Na-12

C. Na-23

D. Na-34

A 108 49in source emits a 633-kev gamma photon and a 606-kev internal-conversion electron from the k shell. what is the binding energy of the electron in the k shell?

At what temperature celsius will 19.4g of molecular oxygen, o2, exert a pressure of 1820mm hg in a 5.12th cylinder?

Which statement is true of the carbon atoms that make up a diamond

What is the root mean square of carbon iv oxide at 27°C?

How do I convert 119 kg into cg

What is most believed by most scientists about the age of our solar system.

The water level in a graduated cylinder stands at 20.0 ml before and at 26.2 ml after a 16.74 g metal sample is lowered into the cylinder. what is the density of the sample. what metal is the sample most likely to be

An electrolyte is a substance that will conduct electricity when dissolved in water. a substance that conducts electricity well is a strong electrolyte. a substance that conducts electricity poorly is a weak electrolyte.

Energy is required to produce a chemical change during (1) chromatography (2) electrolysis (3) boiling (4) melting

What is the definition of colorie