From the stoichiometry of the reaction, 1 mole of ammonia, is produced.
<h3>What is reaction?</h3>
A chemical reaction involves the combination of two or more substances to yield products.
The chemical reaction is; Mg3N₂(s) + 6H₂O(1)→ 2NH3(aq) + 3Mg(OH)2(s)
Number of moles of water = 54.0 g/18 g/mol = 3 moles
Now;
6 moles of water produced 2 moles of ammonia
3 moles of water will produce 3 moles * 2 moles/6 moles
= 1 mole of ammonia
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Answer: Option (A) is the correct answer.
Explanation:
Volatility is defined as the ability of a substance to readily evaporate into the atmosphere.
A small chain of hydrocarbon will have molecules in a small surface area. Moreover, a small chain hydrocarbon will have lesser dispersion forces due to which molecules are able to evaporate into the atmosphere easily.
Short carbon chain hydrocarbon will also be less viscous in nature.
Therefore, hydrocarbons consisting of short carbon chains are more volatile than hydrocarbons with longer chains.
Answer:
V₂ = 119.59 cm³
Explanation:
Given data:
Initial volume = 150 cm³
Initial temperature = 72°C
Final volume = ?
Final temperature = 2°C
Solution:
Initial temperature = 72°C (72 +273.15 K = 345.15 K)
Final temperature = 2°C (2 + 273.15 k = 275.15 K)
Solution:
According to the Charles Law.
V₁/T₁ = V₂/T₂
V₁ = Initial volume
T₁ = Initial temperature
V₂ = Final volume
T₂ = Final temperature
Now we will put the values in formula.
V₁/T₁ = V₂/T₂
V₂ = V₁T₂/T₁
V₂ = 150 cm³ × 275.15 K /345.15 K
V₂ = 41272.5 cm³.K / 298 K
V₂ = 119.59 cm³
B but I don’t know al of these sound weird
To calculate the number of moles, the equation is mass of substance divided by the molar mass of substance.
Molar mass of Fe2O3 is the relative atomic mas of all the elements from the substance added up, which makes 55.845x2 + 16.0 x3 = 159.69g mol-1
So the number of moles is
545g / 159.69gmol-1
=3.41 mol (corrected to 3 sig. fig.)
