How do you know if a equation is balanced or unbalanced

Reducing the amount of error in an experiment

6 moles of gold contain how many atoms?

How does waste filtered by kidneys leave the body? A) It leaves through breath as humans exhale. B) It leaves through the skin as sweat. C) It leaves through the urethra as urine. D) It leaves through the nose and mouth as excess mucus

Which the following atoms will not react with water? a. K b. Li c. Pb d. Na

Sound waves travel faster than light waves. A. True B. False

Click the "draw structure" button to launch the drawing utility. Draw the product formed when 2-heptanone (CH3COCH2CH2CH2CH2CH3) is treated with (CH3) 2CHNH2 in the presence of mild acid. 2-Heptanone is partly responsible for the odor of bleu cheese.

How does the goverment control scientific reseach

What happens when an oceanic plate collides with a continental plate? Select one: a. Neither plate moves under the other. b. The continental plate moves under the oceanic plate. c. The oceanic plate moves under the continental plate

Write a short explanation about the "cheater" way to find the # of valence electrons an element has, and explain what valence electrons have to do with elements bonding?

What type of energy is associated with random motion of the particles in a sample of gas