What is the equation for maganese sulfide

Will mark brainliest 26. which of these statements are true? (3 points) a. gases are compressible b. gases fill their containers completely c. the pressure of a gas is independent of the temperature d. gases have mass e. gases exert pressure f. the pressure of a gas is dependent on the volume g. gas pressure results from the collisions between gas particles h. gases have a definite volume and shape

What is the energy in joules of a mole of photons associated with visible light of wavelength 486 nm?

Stoichiometry- i need with 14 and 15! an explanation would be appreciated!