At which temperature is the crystallization of 7.00g of nh4cl in 10 ml of water

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

Using the first volume and temperature reading on the table as v1 and t1, solve for the unknown values in the table below. remember to use the rules of significant figures when entering your numeric response.

What best discribes the relationship between wavelength and frequency in a electromagnetic wave