Asample of an unknown substance has a mass of 89.5 g. if 345.2 j of heat are required to heat the substance from 285k to 305k, what is the specific heat of the substance?

What is the most stable monatomic ion formed from nitrogen

To find the work done, the force exerted and distance moved are multiplied. a couch is moved twice before you are happy with its placement. the same force was used to move the couch both times. if more work is done the first time it is moved, what do you know about the distance it was moved? a) when more work was done, the couch was moved the same distance. b) when more work was done, the couch was moved less. c) when more work was done, the couch was moved further. d) when more work was done, the couch wasn't moved at all.

What is the amount of energy for a photon that has a 125 cm wavelength