Find the density of an object with a volume of 2.5 cm3 and a mass of 8.0 g.

Which of the following isotopes has the same number of neutrons as carbon-14? a. O-15 (atomic # is 8) b. N-14 (atomic # is 7) c. O-16 (atomic # is 8) d. F-19 (atomic # is 9)

A target is shielded from a radioactive sample by a sheet of metal. What kind of radiation can pass through the sheet of metal and hit the target? gamma rays only gamma rays and beta particles beta particles only beta particles and alpha particles

Which state of matter is highly compressible, is made of particles moving independently of each other, and is present in large quantities near Earth's surface?

Which observation indicates that the kinetic-molecular theory has limited use for describing a certain gas?

Explain how a lunar eclipse differs from a solar eclipse

A sample of bismuth weighing 0.687 g was converted to bismuth chloride by reacting it first with HNO3, and then with HCI, followed by careful evaporation to dryness. The mass of the bismuth chloride obtained was 1.032 g.

When 1 g of sodium chloride (NaCl) is placed in 100 g of water, a solution results. Once the solution is prepared, water is now considered what part of the solution?

1. How is pressure affected as depth increases? 2. As the sun heats the surface of the oceans, two layers of water result. What separates the layers? 3. How is temperature affected when? (a) the depth increases (b) the latitude increases 4.

Are nails in a jar with water a chemical change

What is the molarity of a solution composed of 4.73 g of potassium iodide (KI) dissolved in enough water to make 0.169 L of solution? Answer in units of M.