Answer:
The correct balanced equation is: 4Al + 3O₂ ➞ 2Al₂O₃
Explanation:
Unfortunately, that isn't the balanced equation. If you take the original equation [unbalanced],
Al + O₂ ➞ Al₂O₃
We have 1 aluminium and 2 oxygen on the left-hand side. On the right-hand side, we have 2 aluminium and 3 oxygen. So we must add 3 on the oxygen in the left-hand side and 2 on the aluminium oxide in the right-hand side.
Al + 3O₂ ➞ 2Al₂O₃
Now if you check, we have 1 aluminium and 6 oxygen on the left-hand side and 4 aluminium and 6 oxygen on the right-hand side. The number of moles of oxygen is equal but the number of moles of aluminium isn't. So we must add 4 on the aluminium of the left-hand, in order to have a balanced equation.
4Al + 3O₂ ➞ 2Al₂O₃
For a 208-volt, 4-wire, 3-phase wye power system feeds a school building, the average daily voltage is mathematically given as
x=206.23v
<h3> What is the average daily voltage of the system?</h3>
Generally, the equation for the mean is mathematically given as
x=total sum/ number
Therefore
ts=05.25 volts, 203.75 volts, 208 volts, 204.35 volts, 206.7 volts, 207 volts, and 208.55 volts.
ts=1433.6
In conclusion
x=1433.6/7
x=206.23v
Read more about mean
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Out of these, I have to say the answer is "Washing fruit"
Answer:
big half like whale is so big
Answer:
the basic unit of a chemical element.
synonyms:
particle · molecule · bit · little bit · tiny bit · tiny piece · fragment · fraction · grain · [more]
atoms as a source of nuclear energy.
"the power of the atom"
an extremely small amount of a thing or quality.
"I shall not have one atom of strength left"
synonyms:
particle · molecule · bit · little bit · tiny bit · tiny piece · fragment · [more]
Explanation: