What is the mass of 1 mole of KBr

The electromagnetic spectrum includes the complete range of electromagnetic waves placed in order of: A.) increasing amplitude B.) increasing frequency C.) increasing wavelength D.) decreasing frequency?

How is a model of an atom different from a real atom? A. A model of an atom is not as big as an actual atom. B. A model of an atom is the same as a real atom. C. A model of an atom is more complex than a real atom. D.

What is the accepted name for the compound N2O5

Which of the following describe chemical properties? check all that apply Helium is the lightest monatomic element. Mercury is a liquid at room temperature. Water boils at 100 degrees C Antacid tablets neutralize stomach

Question 2 the osmotic pressure exerted by a solution is equal to the molarity multiplied by the absolute temperature and the gas constant r. suppose the osmotic pressure of a certain solution is measured to be 15.

Science does not include beliefs or opinions theories laws conclusions

For which of the following reactions is ΔHrxn equal to ΔHf of the product? You do not need to look up any values to answer this question. Select all that apply.

You have three molecules of glucose (3C^6H^12O^6). How many carbon atoms do you have?

If the arrangement of atoms in a substance changes

A certain element x has four isotopes. 5.845% of x has a mass of 53.93961 amu. 91.75% of x has a mass of 55.93494 amu. 2.123% of x has a mass of 56.93539 amu. 0.2820% of x has a mass of 57.93328 amu. what is the average atomic mass of element x?