Complete the complex dimensional analysis problem to determine the price of one atom of aluminum. A 20cm x 20cm square of aluminum had a mass of 1.50g. A box of aluminum cost $1.29 and the area of foil in the box is 2.33 m^2. What is the cost of one atom of aluminum?

$8.09

Because you multiply and subtract to get the answer

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.