What is the balanced chemical equation for carbon dioxide with hydrogen gas to produce methane and water?

Write a balanced chemical equation for carbon dioxide reacting with hydrogen gas (H2) to produce methane and water. Then write the equation for the combustion of methane. If you start with 100 g of hydrogen that reacts in this entire process in an excess of carbon dioxide and oxygen how much water is theoretically produced?

Calculate the mass (in kg) of carbon dioxide that is added to the atmosphere per 2.9 kg of octane burned?

The combustion of gasoline produces carbon dioxide and water. Assume gasoline to be pure octane (C8H18) and calculate the mass (in kg) of carbon dioxide that is added to the atmosphere per 2.9 kg of octane burned. Balanced equation for octane: 2C8H18 + 25O2 -> 16CO2 + 18H2O.

How many moles of hydrogen gas would be needed to react with excess carbon dioxide to produce 88.1 moles of wa?

How many moles of hydrogen gas would be needed to react with excess carbon dioxide to produce 88.1 MOLES of water vapor?

the combustion of gasoline produces carbon dioxide and water.?

assume gasoline to be pure octane (C8H18) and calculate the mass (in kg) of carbon dioxide that is added to the atmosphere per 1.0 kg of octane burned. (Hint: begin by writing a balanced equation for the combustion reaction).

explain, please! thanks!

What is the co2 and overall carbon output of a/ CNG/LNG powered IC/ CI engine verses gas…?

…or disel?
Currently if one desird they can go to most any honda dealer and purchase a deicated CNG Civic. But, this is still a foosil fuel? And contributes less, but similar to bezine based fuels? More of the crux of my question is; in the interim, before Electric and Hydrogen go mainstream, how much ‘footprint’ emmisions, are beeing transfered from the end user to the power plant?

When Carbon Monoxide Reacts With Hydrogen Gas, Methane And Water Vapor Are Formed According To The Following R?

When carbon monoxide reacts with hydrogen gas, methane and water vapor are formed according to the following reaction
CO(g) + 3H2(g) = CH4(g) + H2O(g)
Analysis at equilibrium shows that Keq = 0.555, the [CO] = 0.921 M, the [H2] = 1.21 M, and the [CH4] = 0.0391 M. Calculate the equilibrium concentration for the water vapor.

When Hexane, C6h14 (a Gasoline Component) Burns To Produce Water And Carbon Dioxide (co2).?

a) identify the reactants and the products of this reactant and the product of this reaction
b) write a balanced equation for the reaction
c)is this reaction endothermic of exothermic?
please help me do this