A fossilized animal that was killed by a volcanic eruption has 6.25 percent of its original amount of carbon-14 remaining; this radioisotope has a half-life of 5730 years. How long ago did the volcano erupt?

In the X-Men comic book series, there is a character called Kitty Pryde who can walk right throughout walls. In our movie theater example, the wall of the theater represents the cell membrane.

1. Carbon dioxide is in a steel tank at 20°C, 10 liters and 1 atm. What is the pressure on the gas when the tank is heated to 100°C? 2. What temperature will 215 mL of a gas at 20°C and 1 atm pressure attain when it is subject to 1.

List 4 factors that suggest a chemical reaction has taken place

If an atom has a neutral charge what does that tell you A. the atomic mass of an atom B. the number of neutrons of the atom C. the number of electrons in the atom D. the most common isotopes of am atom

Example when materials are prepared as fluids so they can be moved more easily

Defined the following convection

The study of matter and the changes that occurs in matter

Which would be a good source to find weather information about your town from last month? reference book about weather old copies of local newspapers a magazine with weather articles

What is the difference between a mixture, compound, element and pure substance

It takes 554 kJ to remove one mole of electrons from the atoms at the surface of a solid metal. How much energy does it take to remove a single electron from an atom at the surface of this solid metal?