Idon't understand how to do these two questions, can someone explain?

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?

According to the tide table below what time of day will the highest tide occur? (2 pt) the highest tide will occur at

In which block of the periodic table is uranium (u) found? s blockd blockp blockf block