Drag the tiles to the correct boxes to complete the pairs. chromium is a transition metal, and oxygen has an oxidation number of -2. use this information to match each compound to its chemical formula. a. chromium(vi)oxide b. chromium(iv)oxide c. chromium(iii)oxide d. chromium(ii)oxide 1.cro 2.cro2 3.cro3 4.cr2o3

While in europe, if you drive 125 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car’s gas mileage is 32.0 mi/gal? assume that 1 euro=1.26 dollars

Element j is 1s 2s 2p 3s . (i) how many unpaired electrons does j have? (ii) is j a good oxidizing agent or a reducing agent? (iii) state reason for the answer.

Which best describes the present-day universe? opaque, expanding very slowly, stars produce heavy elements transparent, expanding at an accelerated rate, stars produce heavy elements opaque, expanding at an accelerated rate, stars produce only hydrogen and helium transparent, expanding very slowly, stars produce only hydrogen and helium