Find ΔS o for the combustion of ammonia to nitrogen dioxide and water vapor. J/K Is this the sign of ΔS o you would get if you only considered the change in moles of gas during the reaction?

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?

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

Suppose the universe were completely empty except for one object-a solid sphere moving through space of 100 km/s. what sort of path would the object be moving in? explain your answer