If i have 42x1023 atoms of xe how many grams do i have? I will give brainlest for ittt

What is the number of moles in 15.0 g ash3?

How much heat is released upon converting one mole of steam (18.0 g) from 100.0 ∘c to water at 25.0 ∘c? show work and constants, trying to figure out how it works. only given the heat capacity for steam and water so try to only use that

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?