What is the empirical formula of a compound that is 62.0% c, 10.4% h, and 27.5% o by mass?

A 2.95 g piece of zinc (density = 7.14 g/mL) is added to a graduated cylinder that contains 12.13 mL H2O. What will be the final volume reading on the graduated cylinder?

Using only the periodic table, rank the elements in each set in order of increasing size: (a) Se, Br, Cl; (b) I, Xe, Ba.

What is the pH of a solution in which [H3O+] = 0.0001 M?

Which of the following is true about acids? a. Acids give foods a bitter taste. b. Aqueous solutions of acids conduct electricity. c. Acids have a pH value greater than 7. d. all of the above

What is the final temperature of the metal

What compares a law and a theory?

Explain what domain would best be represented by the "?" in the diagram. A) Eukarya because the organisms are all eukaryotic. B) Eukarya because the organisms are all prokaryotic. C) Bacteria because some of the organisms are autotrophs.

If you are eating a hamburger, it is an example of a consumer eating another consumer. a) true b) false

What mass of NaNO3 is needed to make 3.5 L of 2.2 M solution? (Na = 23.0g, N=14.0g, O=16.0g) Explain in steps

In which group do all atoms have seven valence electrons in the ground state?