Answer:
3.6*105g CH4
Explanation:
The detailed solution is shown on the image. From the detailed chemical reaction, we calculate the mass of methane required in the standard combustion reaction of methane and use it to estimate the mass required to produce the quantity of heat required in the question.
To supply the energy needed for an average home in Colorado, approximately 3.58 x 10^8 grams of natural gas (methane) must be burned.
To calculate the amount of natural gas (methane) required to supply the energy needed for an average home in Colorado, we can use the balanced chemical equation for the combustion of methane:
CH4(g) + 2O2(g) → CO2(g) + 2H2O(l)
The molar enthalpy change for this reaction (ΔH°rxn) is -890.4 kJ/mol. First, we need to convert the energy requirement from kilojoules to joules:
2.00 x 107 kJ = 2.00 x 1010 J
Next, we can use the molar enthalpy change to calculate the number of moles of methane required:
moles of CH4 = energy requirement / mlar enthalpy change
moles of CH4 = 2.00 x 1010 J / (-890.4 kJ/mol)
Finally, we can convert the number of moles of methane to grams using the molar mass of methane:
molar mass of CH4 = 12.01 g/mol + 4(1.008 g/mol) = 16.04 g/mol
grams of CH4 = moles of CH4 * molar mass of CH4
Therefore, the number of grams of natural gas (methane) that must be burned to supply this energy is approximately:
grams of CH4 = (2.00 x 1010 J / (-890.4 kJ/mol)) * 16.04 g/mol
Simplifying the calculation:
grams of CH4 ≈ 3.58 x 108 g
#SPJ3
Answer:
Explanation:
Sn + 2HBr = SnBr₂ + H₂
Here HBr is an acid but Sn is not a base . It is a metal . So it is not an acid - base reaction .
HCl + KOH = KCl + H₂O
HCl is an acid and KOH is a base so it is an acid base reaction.
2AlCl₃ + 3Ca(OH)₂ = 2Al(OH)₃ + 3CaCl₂
It is an acid base reaction . It is so because aluminium hydroxide is a lewis acid and calcium hydroxide is a base . So it is an acid base reaction .
2C₂H₆ +7O₂ = 4CO₂ + 6H₂O
It is not an acid base reaction . It is actually an example of oxidation reaction in which ethane burns in oxygen to give carbon dioxide and water.
Bromine +
Chlorine
Bromide +
Potassium
Chloride
Bromine +
Potassium
Chloride
Hydrogen
bromide +
Potassium
Chloride
Chlorine +
Potassium
Bromide ->
2 continents have the most obvious fit of the coastlines.
subject science
Two continents have the most obvious fit of the coastlines are the east coast of South America and the west coast of Africa.
According to the examination of a world map it reveals a striking match between the shapes of the east coast of South America and the west coast of Africa. Attached the map which shows the west coast of Africa in 1842 and also the map of the east coast of South America. According to the picture of the west coast of Africa in 1842, we can see Sierra Leone and Freetown, where the West India Regiments arrived and departed from.
Two continents have the most obvious fit of the coastlines are the east coast of South America and the west coast of Africa, because the east coast of South America and the west coast of Africa seem to fit together like pieces of a jigsaw puzzle.
Wegener discovered that their rock layers are fit just as it clearly. All the landmasses used to be one great landmass called Pangaea. Due to plate tectonics, fire movements in the mantle of the earth, the continents are slowly through millions of years, spread farther apart.
Grade: 9
Subject: chemistry
Chapter: coastlines
Keywords: coastlines