In the Eqn: [3 Fe + 2 O2 → Fe3O4], How many moles of Fe3O4 will be produced from 86.8 L of O2 at STP with an excess of Iron? * SOMEONE GIVE ME A GOOD ANSWER NOW FAST PLEASE

Which statement best describes how atoms combine to form sodium chloride (nacl)? a. a positively charged sodium ion and a positively charged chlorine ion form an covalent bond. b. a positively charged sodium ion and a negatively charged chlorine ion form an covalent bond. c. a positively charged sodium ion and a positively charged chlorine ion form an ionic bond. d. a positively charged sodium ion and a negatively charged chlorine ion form an ionic bond.

Asap! will give brainiest when a heat wave strikes a region causing more people to run air-conditioning units, electrical demand increases. what needs to be done to meet this increased demand? raising the control rodslowering the control rodsremoving the control rods

If a solution had a ph of 7 what is the solution