A0.03 mol sample of nh4no3(s) is placed in a 1 l evacuated flask, which is then sealed and heated. the nh4no3(s) decomposes completely according to the balanced equation above. the total pressure in the flask measured at 400 k is closest to which of the following? (the value of the gas constant, r, is 0.082 l atm mol-1 k-1.)

A100-watt light bulb radiates energy at a rate of 100 j/s. (the watt, a unit of power or energy over time, is defined as 1 j/s.) if all of the light emitted has a wavelength of 525 nm , how many photons are emitted per second?

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

Will give ! what are the advantages and disadvantages of nuclear power? check all that apply. one advantage of nuclear energy is that it does not produce carbon dioxide emissions. storage of nuclear waste is a short-term problem associated with nuclear energy. the problem with uranium mining is that a large quantity of uranium must be extracted to meet energy needs because the energy release from uranium fission is so low. safe operation of a nuclear power plant can be jeopardized by a human mistake.