An irregular shaped object was lowered into a graduated cylinder holding a volume of water equal to 50 mL. The height of the water rose to 70 . If the mass of the stone was 140 what was its density? Show all of your work to earn full credit, including units,

Esign techniques and materials that reduce the negative environmental impact of a structure are referred to as

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

What is the relationship of air masses and the temperature of oceans?