Fill in the blank spaces, pls help me it’s due tdy I’ll mark u as brainlist n give 5 star it’s urgent just do the ones u know leave the ones u don’t:)

What does the mass of 0.7891 mol of ferric oxide (fe2o3)

An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it

Determine the ph of 0.10 m nh3 solution. nh3 is a weak base with a kb equal to 1.8 x 10-5 round answer to nearest whole number.