If the pressure of a sample of gas is doubled at constant temperature, what happens to the volume of the gas?

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Joe shines white light into a bowl half full of water at an angle of incident of 27.5°. calculate the angle of refraction in the water given the indices of refraction for air and water are 1.00 and 1.36, respectively.

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?