When multiplying and dividing, you should always round your answer according to which of the following rules?A. Round answer to the least number of total digits found in the problem.
B. Round answer to 3 sig figs as a standard rule.
C. Round answer to the least number of decimal places found in the problem
D. Round answer to the least number of sig figs found in the problem

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?

Chemistry worksheet - i am not sure what they are asking for exactly?

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.