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1 year ago

Determine Δngas for each of the following reactions:(b) 2H₂(g) + O₂(g) ⇄ 2H₂O(l)

Chemistry

1 answer:

elixir [45]1 year ago

5 0

2H₂(g) + O₂(g) ⇄ 2H₂O(l)

Δngas = 0 - (2 +1)

= -3

<h3>What is Δngas?</h3>

The number of moles of gas that move from the reactant side to the product side is denoted by the symbol ∆n or delta n in this equation.

Once more, n represents the growth in the number of gaseous molecules the equilibrium equation can represent. When there are exactly the same number of gaseous molecules in the system, n = 0, Kp = Kc, and both equilibrium constants are dimensionless.

<h3>Definition of equilibrium</h3>

When a chemical reaction does not completely transform all reactants into products, equilibrium occurs. Many chemical processes eventually reach a state of balance or dynamic equilibrium where both reactants and products are present.

Learn more about Equilibrium

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On a warm summer day in Oslo, the temperature is 21 degree C and the relative humidity is 70%. What is the absolute humidity? Wh

lesya [120]

Explanation:

According to the psychrometric chart at dry bulb temperature of $21^{o}C$ and RH 70%, the absolute humidity = 0.011 kg/kg dry air

Formula to calculate humid volume is as follows.

$\nu_{H} m^{3}/kg$ dry air = $\frac{22.41}{273}TK (\frac{1}{28.97} + \frac{1}{18.02}H)$

= $(2.83 \times 10^{-3} + 4.56 \times 10^{-3} H) T K$

= $(2.83 \times 10^{-3} + 4.56 \times 10^{-3} \times 0.011) \times 294$

= 0.847 $m^{3}/kg$ dry air

Hence, humid volume of air is 0.847 $m^{3}/kg$ dry air.

Specific enthalpy of dry air = specific heat capacity of dry air × dry bulb temperature

= $1.006 kJ/kg ^{o}C \times 21^{o}C$

= 21.126 kJ/kg dry air

Hence, the specific enthalpy of the air is 21.126 kJ/kg dry air.

As per the psychrometric chart at given conditions wet bulb temperature = 17.5 $^{o}C$

As per the psychrometric chart at given conditions dew point temperature = 15.5 $^{o}C$

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3 years ago

BALANCE THIS EQUATION:<br> C4H10 + O2 = C02 + H20

Lostsunrise [7]

Answer:

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3 years ago

Describe how calcium and fluorine bond together to form calcium fluoride

monitta

Answer:<em> A transfer of electrons occurs when fluorine and calcium react to form an ionic compound. This is because calcium is in group two and so forms ions with a two positive charge. ... A pairs of shared electrons makes one covalent bond. The compound formed is known as a molecule***</em>

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2 years ago

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Which of the following two combinations of reactants is more appropriate for the preparation of p-nitrophenyl phenyl ether? Fluo

VladimirAG [237]

Answer:

p-fluoronitrobenzene and sodium phenoxide is more appropriate

Explanation:

An ipso substitution is required to form p-nitrophenyl phenyl ether.

For this ipso substitution, an alkoxide anion needs to attack as a nucleophile at the carbon atom attached to fluorine atom and thereby substitute that F atom.

p-nitrophenoxide is an weak nucleophile as compared to phenoxide due to presence of electron withdrawing resonating effect of nitro group at para position.

p-fluoronitrobenzene is a good choice for nucleophilic attack by alkoxide anion as compared to fluorobenzene due to higher positive charge density at carbon atom directly attached to F atom. Higher positive charge density arises due to presence of electron withdrawing resonating effect og nitro group at para position.

So, p-fluoronitrobenzene and sodium phenoxide is more appropriate

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3 years ago

Webb has calculated the percent composition of a compound. How can he check his result?

fenix001 [56]

Webb has calculated the percent composition of a compound. He can check his result by adding them to see if they equal up to 100. Why? Well, percent composition tells the quantity of elements with 100 as a base of total amount. This means that it will have to add to 100 to check the result. You would add up all of the values of percent composition of elements to see if they equal 100, and if they do, the results are accurate.

Your final answer: Webb can check his result by seeing if they add up to 100, considering that is the base total quantity.

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2 years ago