Answer:
1mole of any substance contains 6.022x10²³atoms
2moles of Fe will contain
2x6.022x10²³atoms = 1.204x10²⁴atoms.
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Answer:
We have:
M
g
(
s
)
+
H
C
l
(
a
q
)
→
M
g
C
l
2
(
a
q
)
+
H
2
(
g
)
LHS
Mg= 1
H= 1
Cl= 1
RHS
Mg= 1
Cl=2
H=2
To make Cl and H have 2 on both sides, we place a 2 in front of the HCl
M
g
(
s
)
+
2
H
C
l
(
a
q
)
→
M
g
C
l
2
(
a
q
)
+
H
2
(
g
)
LHS
Mg=1, H=2, Cl=2
RHS
Mg=1, H=1, Cl=2
Thus the equation is balanced and the coefficient of Mg is 1, which is understood so it is not written in the final equation.
Explanation:
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The boiling point of water is a physical property and is equal to 100<span>°C.
More in depth:
The reason why the boiling point is a physical property, is because it chemically doesn't change anything inside the water. It just gets to a point where it becomes so hot it starts boiling.
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The answer is D. Triple only
