What is the r. a. m. value of copper (Cu) ?

A. 34.5 amu B. 63.5 amu C. 29 amu D. 29/12 of carbon-12

In which geologic era were the dinosaurs? A. Mesozoic B. Precambrian C. Cenozoic D. Paleozoic

A carbon atom is most likely to form what kind of bond (s) with other atoms? ionic bonds, covalent bonds, and hydrogen bonds covalent ionic hydrogen covalent bonds and hydrogen bonds

Which of the following is the best definition of radioactive decay? O A. Radioactive decay is the loss of mass that occurs when an atom is formed. ) B. Radioactive decay is the splitting of a nucleus amounts of energy. O C.

What happens to the event horizon when a larger star "dies"?

Container A holds 722 mL 722 mL of an ideal gas at 2.40 atm. 2.40 atm. Container B holds 169 mL 169 mL of a different ideal gas at 4.60 atm. 4.60 atm. If the gases are allowed to mix together, what is the resulting pressure?

1. Which of the following species determines the chemical properties of an atom? A. Electron B. Neutron C. Nucleus D. Proton 2. The following glasswares are used to measure the volume of liquids except A. graduated beaker B. pipette C. test tube D.

A sample of a certain material has a mass of 2.03 x 10-3 g. calculate the volume of the sample, given the density is 9.133 x 10-1 g/cm3.

What happens to a reactant molecules when forming product molecules

Which is the atomic number of an atom with six valence electrons

O2 + CS2 → CO2 + SO2 Which of the following shows the equation balanced?