After an explosion far away, a person working on a farm first senses vibrations in the ground, then hears the explosion. What accounts for the time between the vibrations and the noise?

What Type of Reaction is the following: Cu2 (Cr2O7) + Fe (PO4) → Cu3 (PO4) + Fe2 (Cr2O7) 3 1. Synthesis 2. Decomposition 3. Single Replacement 4. Double Replacement

A gas occupies a volume of 140 ml at 35.0 c and 97 kpa. what is the volume of the gas at stp

In the chemical equation Zn + 2HCL → ZnCl2 + H2, the reactants are a. zinc chloride and hydrogen. b. zinc and hydrochloric acid. c. zinc and hydrogen carbonate. d. zinc chlorate and water

There are 18 periods in the periodic table. Which answer choice rewords the false statement so it is true?

7. Define electronegativity

Which of the following could a magnet float over? A. A network solid B. A molecular solid C. A semiconductor D. A superconductor

What are genes a part of?

What is the mass (in grams) of 8.45 x 1023 molecules of dextrose: C6H12O6 (Mw. 180.16 g/mol) ?

How do the number and kind of atoms in the reactants compare to the number and kind of atoms in the products

Scientists conduct experiments to collect evidence. Which of the following is the best definition of the word experiment as used by scientists?