BHCC CHM$120$

Spring $2024$

Sakimoto

$6.$ In addition to weighing the pennies, how else could I tell which pennies are which?

$7.$ It currently costs $$0\mathrm{.}0272$ to make a penny $($worth $$0\mathrm{.}01),$ leading to many calling for getting rid of the penny. In fact, the metal in the penny can be worth more than the penny itself. If the current price of copper is $$\frac{8\mathrm{.}40}{k}g$ and the price of zinc is $$\frac{2\mathrm{.}66}{k}g,$ what is the material value of one of your type A pennies?

$8.$ Describe how the magical vial behaves.

$9.$ To the best of your abilities, describe what the important components of the magic vial, and their purpose. $($You don't need to know the specific chemicals, but should describe what you learned in your experiments$)$

$10.$ What causes the magic vial to behave differently? $($You can talk about what made the vial change color faster or slower, or stopped it from changing color completely.$)$

$16$