For the following REDOX reaction, state the oxidation number for each element in the reaction. State which element is being oxidized and which element is being reduced, as well as how you know. State which element is the oxidizing agent and which element is the reducing agent, as well as how you know. MnO∨2 + H∨2C∨2O∨4 + H∨2SO∨4 ⇒ MnSO∨4 + CO∨2 + H∨2O

answer; /// the amount of material dissolved in a measure of liquid(concentration) the above statement is (true); /// good luck

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2