Identify the Bronsted-Lowry acid and base in the following chemical equation:   C3H7NH2 + H3O+ –> C3H7NH3+ + H20   C3H7NH2    H3O+ 

The three different emissions from radioactive sources have different penetrating power. Identify them from least to most penetrating.   Least  Intermediate  Most 

A dextrose solution with a mass of 2.00 x 102 grams has 15.8 grams of dextrose dissolved in it. What is the mass/mass percent concentration?

What volume of a 12.75% m/v solution of glucose (C6H12O6) in water is needed to obtain 50.0 grams of C6H12O6?  

Some brands of aspirin have 81 mg of aspirin in each tablet. If a person takes 8 tablets per day, how many grams of aspirin is that person consuming every day?  

Name 3 diatomic molecules.

The current disintegration rate for carbon-14 is 14.0 Bq. A sample of burnt wood discovered in an archaeological excavation is found to have a carbon-14 decay rate of 3.5 Bq. If the half-life of carbon-14 is 5,700 years, approximately how old is the wood sample?

Express each number in scientific notation:   67,000    123.34    0.000369 

Elements that have similar chemical properties are grouped in columns called groups or families. Four of these columns have names. Name 3 of them.

The word mole represents a number of things. How many things are in a mole?