Problem 1. Redox reactions save lives! Airbags in automobiles are inflated with nitrogen gas produced by two redox reactions. The gas generator in some bags contains sodium azide (NaN3) and iron (III) oxide (Fe2O3). The mixture is automatically ignited during a head-on collision. When this happens, the sodium azide decomposes in a redox reaction to form sodium and nitrogen. The sodium produced by this reaction then reacts with the iron (III) oxide as represented in the unbalanced equation: Na(s) + Fe2O3(s) → Na2O(s) + Fe(s) Write the balanced oxidation and reduction half-reactions for the above redox reaction.

Lithium batteries are used throughout our modern world – in cell phones, laptops, tablets, etc. In fact, if you are regularly recharging your device, it’s highly likely it contains a lithium ion battery. The lithium iron phosphate battery provides stable function over time. The overall reaction for the lithium iron phosphate battery is below: LiFePO4 + 6 C -> LiC6 + FePO4 A certain lithium battery weighs 0.6 g and has a capacity of 2250. mA hr (that is, the cell can store charge equivalent to a current of 2250. mA flowing for 1 hr). What is the capacity of this cell in coulombs? What mass of the reactants is needed to deliver 2250. mA hr? What percentage of the cell mass consists of reactants?

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The chemical equations for the oxidation of carbon and hydrogen are: C+O2 -->CO2 2C+O2--> 2CO2 2H2 +O2--> 2H20 -explain the conditions related to combustion that favor the chemical reactions and products.

One of the experiments of Lab 3 involves oxygen (O2) as a reactant. What reaction is it?     Producing copper(II) sulfate from copper(II) chloride     Producing copper oxide from copper metal.     Producing magnesium from magnesium sulfate     Producing copper(II) sulfate from copper and sulfur     Producing copper oxide from copper(II) hydroxide.     Producing magnesium chloride from a magnesium chloride hydrate     Producing copper(II) sulfate from copper(II) sulfate pentahydrate     Producing magnesium oxide from magnesium

Which of the following reagents should you use in the first step to convert copper metal to copper(II) nitrate? A)HCl B)HNO3 C)NaOH D)H2SO4

Specify whether the reactants of the given half-reaction is an oxidizing or reducing agent. VO, (aq) → V² (aq) AsH3(g) → As(s) Ag(s)→ Ag₂O(s) Cr(s) → Cr³+ (aq) (in acid) (in acid) (in base) (in acid) Choose... Choose... Choose... Choose... + + +

The hydroperoxide ion, HO2–(aq), reacts with permanganate ion, MnO4–(aq) to produce MnO2(s) and oxygen gas. Balance the equation for the oxidation of hydroperoxide ion to O2(g) by permanganate ion in a basic solution.