11.625 moles of Na₂O are produced.
<h3>What do you mean by the term mole ?</h3>
A mole is defined as the amount of a substance that contains exactly 6.02214076 × 10²³ ‘elementary entities’ of the given substance.
It can be represented by the following formula:
n = N/NA
To calculate moles of Na₂ O produced are -:
40 gm of sodium
3.00 gm of oxygen
4 Na+ O₂----->2Na₂O
First calculate limiting reagent,
Stochiometric ratio,
a/b=4/1
=4
Molar ratio,
M/n=4/22/3/22=4/22×32/3
=1.93
As a/b>m/n
So, sodium is limiting reagent
4 Na+ O₂----->2Na₂O
As 32 g of O₂ produced =124 g of Na₂O
SO,
3 gm of O₂ produced =124×3/32
=11.625 gm
11.625 gm of Na₂O can be produced .
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According to Avagadros law 1 mole of a substance contains 6.02 × 10^23 particles.
Thus, 1 mole of C6H14 contains 6.02 × 10^ 23 molecules,
Therefore, 9.25 × 10^24 molecules will have;
(9.25 × 10^24)/ (6.02 ×10^23)
= 15.365 moles.
To solve this problem, we make use of the Faraday’s law
for Electrolysis. The formula is given as:
I t = m F / e
where the variables are,
I = current = 24.4 A
t = time = 46 min = 2760 s
m = mass produced = (unknown)
F = Faraday’s constant = 96500 C/equivalent
e = gram equivalent weight of gold
The gram equivalent weight is calculated by dividing the
molar mass with the amount of charge produced per atom. Gold has charge of 3+
therefore the gram equivalent weight is:
e = (196.97 g/mol)(1 mol/3 equivalents) = 65.66
g/equivalents
Solving for the mass m:
m = e I t / F
m = (65.66 g) (24.4 A) (2760 s) / (96500 C)
m = 45.82 g
2250cm3= 2250/1000000m3=.00225m3
D) Responds slowly
Good luck. It responds slower them the nervous system
