Answer:
5.83 mol.
Explanation:
- From the balanced reaction:
<em>2Al + 3Ag₂S → 6Ag + Al₂S₃,</em>
It is clear that 2 mol of Al react with 3 mol of Ag₂S to produce 1 mol of Ag and 1 mol of Al₂S₃.
Al reacts with Ag₂S with (2: 3) molar ratio.
<em>So, 2.27 mol of Al reacts completely with 3.4 mol of Ag₂S with (2: 3) molar ratio.</em>
<em />
- The limiting reactant is Ag₂S.
- The excess "left over" reactant is Al.
The reamining moles of excess reactant "Al" = 8.1 mol - 2.27 mol = 5.83 mol.
So basing on my understanding of this so far, an atom is an element that has the same number of protons and neutrons, an ion is an element that has different numbers of protons and electrons, an ion is positive when it has more protons than electrons and negative when it has more electrons than ions .
Answer:
The answer to your question is 0.92 atm
Explanation:
Data
Atmospheric pressure = 27.6 inHg
Atmospheric pressure = ? atm
Process
1.- Convert inHg to cmHg
1 in Hg ------------------- 2.54 cm
27.6 inHg ----------------- x
x = (27.6x 2.54) / 1
x = 70.1 cm
2.- Convert cmHg to mmHg
2.54 cm ----------------- 25.4 mmHg
70.1 cm ---------------- x
x = (70.1 x 25.4)/2.54
x = 701 mmHg
3.- Convert mmHg to atm
760 mmHg ------------- 1 atm
701 mmHg ------------- x
x = (701 x 1)/760
x = 0.922 atm
Reason is if a cord is cover with rubber and high currents and voltage can cause heat within which can be very harm since it can also handle and melt to a certain degree.
