Which type of radioactive emission has a positive charge and weak penetrating power? A) alpha particle

B) beta particle

C) gamma ray

D) neutron

What is a scientific theory? a. a scientist's guess about how something works b. the results of an experiment obtained using the scientific method c. a proven fact that will never change d. an idea that is backed by data from many sources

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder

In a laboratory, 1.55mg of an organic compound containing carbon, hydrogen, and oxygen is burned for analysis. this combustion resulted in the formation of 1.45mg of carbon dioxide and .89 mg of water. what is the empirical formula for this compound?