How much concentrated 5.0M nitric acid is needed to prepare 50 mL of a 1.0 M solution?

The compound methyl butanoate smells like apples. its percent composition is 58.8% c, 9.9% h, and 31.4% o. what’s the empirical formula ?

In an oxidation-reduction reaction, oxidation is what happens when a reactant

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?