Để khử hoàn toàn 4,56 gam hỗn hợp X gồm FeO, Fe2O3, Fe3O4 cần 0,075 mol H2. Mặt khác hòa tan hoàn toàn 4,56 gam hỗn hợp X trong dung dịch H2SO4 đặc nóng, dư thu được V ml khí SO2 (đktc). Tính V.

Often on a topographic map, every fifth contour line is darkened. what is this line called? a. key b.slope c.benchmark d. index contour

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

Vi limitens. vastery test select the correct answer. which statement explains why large atoms are more reactive than small atoms? a. large atoms have valence electrons farther from the nucleus and lose them more readily. b. large atoms have greater ionization energy, which they can utilize during a reaction. c. large atoms have a greater number of electrons that they can lose during a reaction. d. large atoms have more energy levels, so they have more energy to pass on in a reaction. reset next