## Everyday Acids Lab

Purpose: Find the pH of candy chosen.

Materials:

6.90g of A.S.A

100 mL Water

Mortar and Pestle

50.0 mL of NaOH

Phenolphthalein

Funnel

Burrette

200 mL Beaker

75 mL Beaker (x3)

Procedure:

1. Weigh out mass of candy (acid).
2. Grind candy with mortar and pestle.
3. Combine 100 mL of water with grinded candy.
4. Filter the mixture.
5. Drop NaOH into 10 mL of the mixture until color changes (Do 3 trials).

Calculations:

Conclusion:

We found that A.S.A has a pH value of 2.5. According to the internet, the average pH of A.S.A (Aspirin) is 1-3.

## Week 13 in Precalc 11

This week he learned how to graph reciprocal quadratic functions. When beginning these questions it is always easiest to start by graphing the original equation, in this example it is x squared minus 3. After graphing this draw a broken vertical line on the zeros or x-intercepts, because this graph has 2 solutions it will have 3 hyperbolas. The 2 “L” shaped hyperbolas hover right above the x-axis and almost touching the broken lines. The hyperbola on the bottom follows the same rules except it’s on the other side of the broken line.

## lateX coding

example 1: $5^2$
example 2: $5^{-1}$
example 6: $\frac{2} {3}$
example 9: $\tan(\theta)=\frac{9} {12}$ $\sin(32^{\circ})=\frac{x} {2}$ $(\theta)=\cos^{-1}(\frac{3} {5})$