Answer:
C6H12O6
Explanation:
Just use the table method like I did and compared the molecular mass with the mass of the empirical formula.
Answer:

Explanation:
The <em>dimensional analysis</em> helps you by focusing your attention into the units: you must set up the equation starting with the available units and add the factors with the units such that the cancelation of numerators and denominators ends up with the desired units: grams of aluminium in this case.
In this case, you start with a mass of 2.56 grams per penny, which is
, whose value is $200.00 and want to end with the grams of
Aluminium needed.
Then, you must use the mole ratios derived from the chemical equation in a way that the units lead from grams of copper to grams of aluminium.
The equation is:

From which, the mole ratio between copper and aluminium is:

You must also use the atomic masses of Cu and Al which are 63.5g/mol and 27g/mol respectively.
The equation is:

You can check that afeter multiplying all the factors, the most units will cancel and the final units will be grams of Al.
<h2>Answer:</h2>
Plasma
<h2>Explanation:</h2>
Plasma is the stuff of lightning, flame and stars. Plasma is neither solid, liquid nor gas plasma is a fourth state of matter.
Plasma is when the electrons are "freed" from their host atoms for a short time, due to high temperatures. Fire is plasma, it responds to electric fields. Lightning is also plasma.