Can someone help me with all of those plsss

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

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

The density of the solid phase of a substance is 0.90 g/cm3 and the density of the liquid phase is 1.0 g/cm3. a large increase in pressure will a. lower the freezing point b. raise the freezing point c. lower the boiling point d. raise the triple point e. lower the triple point