Cho biết các số liệu sau ở 25oC: Eo(Au+/Au) = 1,7V; Eo(O2/H2O) = 1,23V; hằng số điện li tổng của ion phức (Au[CN]2) - là 7,04.10-40. Chứng minh rằng khi có mặt ion CN - trong dung dịch kiềm thì Eo([Au(CN) -/Au) nhỏ hơn Eo(O2/OH -), nghĩa là oxi oxi hoá được vàng.

Plz me ! 1 which of earths spheres contains most of its mass? a atmosphere b hydrosphere c geosphere* d biosphere 2 erosion and weathering are examples of which types of forces? a constructive forces b destructive forces* c gravitational forces d inertia-related forces 3 which of the following statements about earths atmosphere is true? a earths atmosphere contains 78% water vapor which is essentail to life b earths atmosphere contains 21% oxygen c earths atmosphere contains carbon dioxide which all life forms require d earths atmosphere allows radiation from the sun to pass through it and warm earths surface* 4 the strenght of the force of gravity between two objects is determined by which of the following factors? select all that apply a the messes of the objects* b the distance between the objects* c the volumes of the objects d the surface area of the objects 5 earth and moon are kept in there respective orbits due to the influence of a inertia b gravity c gravity and inertia* d neither gravity or inertia if you answer all questions right i will give

Which one of the following substances would be the most soluble in ccl4? na2so4 h2o ch3ch2ch2ch2oh c4h10 hi

What is the correct lewis dot structure for arsenic?