What percent is Cu of CuCO3?
Round your answer the tenth place.

In the reaction between a crushed antacid tablet and vinegar what gas is emitted

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.

What is the empirical formula of a compound that is 50.7% antimony and 49.3% selenium ?