Carbon-14 is a common isotope of the element. How many electrons

does it contain?

O 14

O 12

O 8

O 6

How many electrons will a fluorine (f) atom gain or lose in forming an ion?

What is the atomic mass of dinitrogen trioxide (atomic mass of oxygen=15.999 u; atomic mass of nitrogen = 14.007 u) ?

Of the four methods of heat transfer: conduction, advection, convection, and radiation, which one is considered the most important method of heat transfer?

If the gas inside the flask is cooled so that its pressure is reduced from 797.3 torr to a value of 715.

The ions present in acids are

How can we tell when something is polar or non-polar in an Inter-molecular Force?

A reaction is most likely to occur when reactant particles collide with

A student has a solution with a pH of 7. The student adds HF, hydrogen floride, to the solution, hoping to increases the pH of the solution. What is wrong with this student's approach? Select one: A. You cannot change the pH of a solution. B.

What is more likely to happen if wetlands are drained?

A) If you weigh a hydrated compound before and after heating it. Do you expect the mass to be more or less than before heating? Explain why. b) How about if you weigh a bag of popcorn before and after heating it.