If a sample of helium gas has a volume of 120 ml and a pressure of 850 mmHg, what is the new volume if the pressure is changed to 0.75 ATM at a constant T and n pls no links or downloads

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.