Find the negative logarithm of a hydrogen concentration in a solution with a value of 10-
4.505(this number can be also written as 0.31261, 3.1-e05, 3.1e-5).

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.

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.

Rank the four gases (air, exhaled air, gas produced from from decomposition of h2o2, gas from decomposition of nahco3) in order of increasing concentration of co2