Explanation:
A double replacement or double decomposition or metathesis reaction is a reaction which involves the actual exchange of partners to form new compounds.
AB + CD → AD + CB
Examples are neutralization reactions, precipitation reactions e.t.c
Characteristics and identification:
- Formation of insoluble compounds called precipitates.
- Formation of water or any other non-ionizing compound
- liberation of a gaseous product.
Type of compounds in the reactants and products:
The reactants involved are always ionic compounds that are joined by electrovalent bonds. These compounds will produce ions in solutions.
The products are usually;
- Insoluble precipitate
- Gases
- Water
Learn more:
Precipitation brainly.com/question/1870098
Neutralization brainly.com/question/6447527
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The correct answer is Seafloor Spreading
Give me brainliest if it is correct!
Answer:
Sunlight penetrates the top layers of the ocean, so photosynthesis occurs there.
Explanation:
Mass of methane takne = 1.5g
moles of methane used = masss / molar mass = 1.5 / 16 = 0.094 moles
mass of water = 1000 g
Initial temperature of water = 25 C
final temperature = 37 C
specific heat of water = 4.184 J /g C
1) Heat absorbed by water = q =m• C• ΔT = 1000 X 4.184 x (37-25) = 50208 Joules
2) Heat absorbed by calorimeter = Heat capacity X ΔT = 695 X (37-25) = 8340 J
3) Total heat of combustion = heat absorbed by water + calorimeter = 50208 + 8340 = 58548 Joules
This heat is released by 0.094 moles of methane
So heat released by one mole of methane =
- 622851.06 Joules = 622.85 kJ / mole
4) standard enthalpy of combustion = -882 kJ / mole
Error = (882-622.85) X 100 / 882 = 24.84 %
<span>A hydrocarbon is a molecule whose structure includes only hydrogen and carbon atoms. Hydrocarbons containing between six and ten carbon molecules are the top components of most fuels. In general, these molecules are burned to produce energy. Examples such include: 1. Methane: A fuel in electrical generation. 2. Propane: Generally used heating and cooking. 3. Butane: Generally used in lighters and aerosol cans. 4.Heptane: The major component of gasoline Hydrocarbons are majorly used as a combustible fuel source and are considered a primary source of energy for contemporary civilizations. Oil is an excellent example of a hydrocarbon fuel currently in use all over the world.</span>