What is the mass of 1.25 mole of zinc

How many ions that have a +1 charge will bond with an ion that has a -2 charge

Agas mixture with a total pressure of 745 mmhg contains each of the following gases at the indicated partial pressures: co2, 245 mmhg ; ar, 119 mmhg ; and o2, 163 mmhg . the mixture also contains helium gas. part a what is the partial pressure of the helium gas? phe p h e = nothing mmhg request answer part b what mass of helium gas is present in a 10.2-l sample of this mixture at 283 k ? m m = nothing g request answer

This element exists in adundance in the sun.explain how you would go about capturing sunlight.would this captured sunlight contain any of the element?