Use the ideal Gas Law to calculate the number of moles (n) of helium in a
4000 Liter weather balloon near the top of Mt. Rainier with a pressure of
0.6 atm and temperature of 260K.*

0.0089 mol

7,600,000 mol

2400 mol

0236.9 mol

112.6 mol

Which real-world scenarios below represent physical and chemical changes? -running a car -exploding fireworks -mixing water and powdered drink mix -combining oil and vinegar to make salad dressing -taking aspirin for a headache -diluting bleach with water-digesting dinner-spreading peanut butter on bread

What diagram shows the ionic compound of magnesium oxide

Which is an example of the practical pursuit of alchemy? a. forming perfect substances. b. transforming base metals. c. developing metalworking techniques. d. linking spiritual characteristics with material substances.