I have 430 liters of gas in a piston at a temperature of 250° C. If I cool the gas until the volume decreases to 185 liters, what
will temperature of the gas be?

Help please!!

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)