Question

Determine the number of molecules of oxygen (O_{2})
required to complete the following chemical equation.

N_{2} + O_{2} → 2 NO_{2}

The number of molecules of oxygen (O_{2}) required
is:

Answer #1

Given stoichiometric equation is (Balanced equation),

N2 + O2 → 2 NO2.

1 N2 + 1 O2 → 2 NO2

This stoichiometric eqution says, 1 mole of N2 reacts with 1 mole of O2 and produces 2 moles of NO2

i.e.,

To complete the above reaction, it needs 1 mole of O2 molecules

and we know that, from avogadro's number,

1 mole of substance is equal to 6.022 * 10^{23}
atoms/molecules

Therefore,

Amount of O2 required = 1 mole of o2 = 6.022 * 10^{23}
molecules of O2

**Answer: 6.022*10 ^{23} molecules of
O2**

Balance the following chemical equation and determine the number
of moles of CO2(g) produced when 4.05 x 1020 molecules of
C6H12O6(s) react with excess O2(g) to produce CO2(g) and H2.
C6H12O6(s) + O2(g) → CO2(g) + H2(l)

4) Consider the following unbalanced equation. How many
molecules of O2 will be required
to produce 1.60 mol of water?
H2 + O2 a? H2O
a. 4.82

The enthalpy change of reaction for the balanced
N2(g)+O2(g)--> No2(g) (Unbalanced) equation (with lowest
whole-number coefficients) is ∆? = 67.7 kJ. If 2.50 x 103 mL N2(g)
at 100.0 C and 2.50 atm and 4.50 x 103 mL O2(g) at 100.0 C and 2.50
atm are mixed, what amount of heat is necessary to synthesize the
maximum yield of NO2(g)?

(a) Calculate the number of oxygen molecules and the
number of oxygen atoms in 34.5 g of
O2.
oxygen molecules =
×
10
oxygen atoms
=
×
10
Enter your answers in scientific notation.
(b) Calculate the mass of 8.99
×
1014 SO3
molecules.
×
10
g
Enter your answer in scientific notation.

balance the following chemical equation
1.---mgcl2 +----k3po4>-----mg3(po4)2 + kcl
2. ----n2 +----h2>NH3
3.----Agclo3>Agcl + o2
4.give the IUPAC name or chemical formula of the .Cr2S3, CO3P2
and silver chromate and lron (lll) chlorate

Given the following chemical equation, determine how many grams
of N2 are produced by 9.75 g of H2O2 and 6.99 g of N2H4?
2H2O2(l)+N2H4(l)=4H2O(g)+N2(g)

How many air molecules are present in 1cm3 of air (
80% N2 and 20% O2 by number) at 1 atm and
298k?

In the car exhaust manifold, (>215 degrees C) N2 and O2
combine to form NO, which moves on with additional O2 to form
NO2(smog).
Step 1: N2 + O2 <-- --> 2NO K1 = 4.3 x 10^-25
Step 2: 2NO + O2 <-- --> 2NO2 K2= 6.4 x 10^9
Write the balanced net equation, determine Kc for the reaction
(first prove that overall K is the same as the product of K for
each individual step), and based on the...

If C6H12O6, reacts with oxygen, O2, to form CO2 and H2O. How
much O2 (in moles) is required for the complete combustion of 6.76
mol of the sugar? (Please balance the equation)

1) Identify the proper form of the equilibrium-constant
expression for the equation
N2(g)+O2(g)⇌2NO(g)
K=[NO] / [N2][O2]
K=[NO]2 / [N2][O2]
K=[N2][O2] / [NO]2
K=2[NO][N2] / [O2]
2) The acid HOCl (hypochlorous acid) is produced by bubbling
chlorine gas through a suspension of solid mercury(II) oxide
particles in liquid water according to the equation
2HgO(s)+H2O(l)+2Cl2(g)⇌2HOCl(aq)+HgO⋅HgCl2(s)
What is the equilibrium-constant expression for this
reaction?
K=[HOCl]2 / [Cl2]2
K=[HOCl]2[HgO⋅HgCl2] /
[Cl2]2[H2O][HgO]2
K=[HOCl]2 /
[Cl2]2[H2O]
K=[Cl2]2 /
[HOCl]2

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