# Hon Chemistry 9-3-20 Using Density

HON CHEMISTRY – Here’s a pic of some “high density” koi that I saw in Hawaii (at the Dole Pineapple Plantation, of all places!). Great applicaitons of density today! Remember, in chemistry we use math as a tool, therefore we might work problems a little differently in chemistry than you do in your math class.

When working these problems, don’t forget to follow the problem solving steps we discussed today:

• Analyze – write down what you’re given and what you’re looking for
• Plan – write a formula where you isolate the unknown on one side by itself
• Compute – plug in your data, numbers and units; then cancel the units, and if they cancel correctly, go on to the calculator. Be sure and give your answer what the correct units.
• Evaluate – does your answer make sense, have you used the correct units, do you have the correct sig figs?

## 4 thoughts on “Hon Chemistry 9-3-20 Using Density”

1. L Starker HC6 says:

This week I learned how to use formulas such as the Q formula and calculating density. I applied these to completing my homework more efficiently as well as to understanding how to convert things in my daily life.

2. R Davis HC6 says:

In chemistry this week, even though it was via zoom, I learned converting measurements using the q-formula and using a balance as well. I applied the conversions to help my mom with dinner and the balance in completing the building balance take home lab. I hope to continue to especially use converting more often in my walk through this interesting period of life.

3. R Forsythe HC6 says:

This week I learned the q-formula. I had a thought about applying to calories used during exercise.

1 kcal = the amount of energy needed to heat 1 kg of water 1 K

I thought about how much energy 500 kcal is in terms of heat.

QS = QG * CF
xK = 500 kcal * 1 K/1kcal
xK = 500 K increase in 1 kg of water

4. C Roberts HC6 says:

This week i learned the q-formula and learned how to apply that to things around my house like cooking and converting measurements when I measured something.