People have developed models of the universe for thousands of years. Identify two observations that a model of the universe would need to explain in order to be useful

describe the characteristics of compounds and explain how compounds are named

If a student did not remove all of the bubbles from inside the buret before reading the initial volume and beginning the titration, will this cause the calculated concentration of the hydrochloric acid determined from that trial to be higher or

How many moles of sodium are needed to produce 2.4 mol of sodium oxide?

Fullerene is a perfect sphere with the chemical formula c60. From this information, what you can deduce about the structure of fullerenes? 1. It only contains one elements 2. It is a compound of 60elements 3. It is a mixture of 60 atoms 4.

What is knowing facts about chemistry called

How did the invention of the spectroscope in 1859 change the science of chemistry

Will zinc and sodium carbonate react?

What fraction of carbon 14 remains in an animal frozen in a glacier 18000 years ago?

How do you convert the number of molecules of a substance to the number of moles? a. add Avogardo's number b. subtract Avogardo's number c. multiply Avogardo's number d. devide Avogardo's number

Give 3-5 pieces of evidence to support why cloning is bad.