The differences in their formations. Igneous is formed by cooled and crystallized rock, sedimentary is formed by sediment compaction and cementation, and metamorphic is formed by intense heat and pressure.
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These atoms are isotopes
Isotopes are atoms with the same number of protons (which determine the atomic number) and a different number of neutrons. These two atoms have the same number of protons (13), but a different number of neutrons, so they are isotopes.
According to their number of protons, these are Aluminum isotopes: ²⁷Al (stable), and ²⁶Al (radioactive), respectively.
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Gay Lussac's Law states: At a constant volume Pressure<span> divided by </span>Temperature<span> is</span>constant<span> P/T = k Together these three laws form the foundation of the Ideal </span>Gas<span>Law. Objective: Students will </span>investigate<span> Gay Lussac's Law relating </span>pressure<span> and</span>temperature<span> at a </span><span>constant temperature.</span>
Answer:
Explanation:
The resistance of a metal rod is given by
where
is the resistivity
L is the length of the rod
A is the cross-sectional area
The resistivity changes with the temperature as:
where in this case:
is the resistivity of silver at 
is the temperature coefficient for silver
is the current temperature
Substituting,
The length of the rod changes as
where:
is the initial length at 
is the coefficient of linear expansion
Substituting,
The cross-sectional area of the rod changes as
So, substituting,
Therefore, if the initial resistance at 21.0°C is
Then the resistance at 180.0°C is:
