Identify the type of reaction that each material must undergo to generate water. LiOH₍s₎ H₂SO₄₍aq₎ H₂₍g₎ + O₂₍g₎ CH₄₍g₎ Which material would you recommend for the kit?

Given the reaction:    Fe+2 + Cr2O7 -2  → Fe+3 + Cr+3  How many mole/s of Fe+2 is/are used involved in a balanced reaction ?     7     5     3     4     6

What type of reaction is this?

Consider the reaction: Mg(s) + 2 Hl(aq) → Mgl₂(aq) + H₂(g) Which one of the following statements is the correct description of the oxidation and/or reduction processes in this reaction? Mg is reduced; H is neither reduced nor oxidized; I is oxidized Mg is reduced, H is oxidized, I is neither reduced nor oxidized Mg is oxidized; H is reduced; I is reduced Mg is oxidized; H is reduced; I is neither reduced nor oxidized Mg is oxidized; H is is neither reduced nor oxidized; I is reduced

How many moles of NO₂ would be required to produce 4.62 moles of HNO₃ in the presence of excess water in the following chemical reaction? 3 NO₂(g) + H₂O (l) → 2 HNO₃(g) + NO(g)

Among the substances that react with oxygen and that have been considered as potential rocket fuels are diborane [B2H6(g), which produces B2O3(s) and H2O(g)], methane [CH4(g), which produces CO2(g) and H2O(g)], and hydrazine [N2H4(l), which produces N2(g) and H2O(g)]. On the basis of the heat released by 2.46 kg of each substance in its reaction with oxygen, and assuming that thermal energy is the most desirable property in rocket designs, evaluate the possibility of each being used as a rocket fuel. (Hint: Use the Supplemental Data to compute ΔHorxn in kJ/mol, and qsurr in MJ for each fuel. Enter unrounded values.) diboraneΔHorxn  kJ/molqsurr  MJ methaneΔHorxn  kJ/molqsurr  MJ hydrazineΔHorxn  kJ/molqsurr

How many moles of NO₂ would be required to produce 4.70 moles of HNO₃ in the presence of excess water in the following chemical reaction? 3 NO₂(g) + H₂O (l) → 2 HNO₃(g) + NO(g)

Write a balanced equation to describe your observations.  (Hint:  This reaction is a double-displacement process.)

I need help with questions 67-68. Could you also explain which option is the correct answer for each question?

Complete and balance the complete combustion of octane (C8H18)