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?

A set of equations that represent a real world process is a what model

Chemists develop a new theory to explain the bonding that occurs within metals. Which statement describes this theory? It is likely to change because experiments may reveal new information.

Whose cell walls may contain cellulose can be plantlike, animal like or fungus

39. Which is a binary ionic compound? A) O2 C) H2sO4 B) NaF D) Cu (NO3) 2

Explain different between subscripts and coefficients

How many metaloides are found on the periodic table

Which of the following is considered to be a chemical property of matter?

How does percent composition by mass contribute to writing a balanced equation?

Raising the temperature of a reacting system increases the rate of the reaction, but does NOT increase the a) activation energy b) number of collisions c) fraction of the reacting particles which possess energies greater than the activation energy

If you have 60 grams of MgCl2 in 5 liters of solution, what is the molarity of this solution?