An unknown sample weighing 28.26g contain 70% of hydrogen and 30% of carbon calculate the

[1]empirical formula

[2]the molecular formula

[3]give the iupac name of the compound

What is the molarity of ZnCl2 that forms when 20.0 g of zinc completely reacts with CuCl2 according to the following reaction? Assume a final volume of 255 mL. Zn (s) + CuCl2 (aq) →ZnCl2 (aq) + Cu (s)

What happens to the air particles in the bubble when you pull up on the plunger

What is a radioactive idotope?

Calculate the mole fraction of benzene in a mixture that contains 45.2 g of benzene and 115.8 g of toluene.

What is A for ClO3, the chlorate ion?

How are real gases different from ideal gases?

Which one doesnt belong in the list below? A. a meter B. one liter C. One centimeter D. one kilometer

Which elements did curies discover

When rubidium metal is exposed to air, two atoms of rubidium, Rb, combine with one atom of oxygen. If 1.98 grams of rubidium is exposed to air, what will be the mass of the product in grams

Fission reactions can get of of control without what taking place?