A piece of copper has a volume of 100.0cm^3 (3power) if the mass of the copper is 890g, what is the density of copper?

What is the total number of atoms in 1.0 mole of CO2? A. 1.5 x 10^23 B. 12x 10^23 C. 3.0 x 10^23 D. 18 x 10^23

Which of the following is an arrhenius acid? a brønsted-lowry acid? a lewis acid? it is possible for an acid to be of more than one type.

The properties of the hydrogen atom form the basis for all life. True False

What happens when you mix acid and base together?

The three dimensional structure of dna was determined by two scientist named

What happens to the total mass of a substance undergoing a physical change

32 g of sulfur will react with 48 g of oxygen to produce 80 g of sulfur trioxide. if 20 g of sulfur and 100 g of oxygen are placed into a sealed container and allowed to react, what is the mass of sulfur trioxide in the container after the reaction

Water exhibits high levels of cohesion due to the polarity of the molecule (positively and negatively charged sides). given this information, which type of bond is responsible for water's cohesion and which atoms interact to form this bond?

scientist have found many marine fossils on the mountain far from any ocean or sea what is the best explanation for these fossils

The change in energy needed to change the state of a substance is