0.90g of an organic acid on combustion 0.88g of CO2 and 0.18g of H20 if the vapor density of the acid is 45, calculate the molecular formula

Particles vibrate in a rigid structure and do not move relative to their neighbors.

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?

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.