Chemistry, 04.10.2021 08:00, erbnichole
You fill a weather balloon with 10 moles of helium (He)gas. Consider that the gas will expand greatly as the balloon rises in the atmosphere and the pressure decreases. The balloon will expand to a completely full volume of 5000.0 Liters when the desired altitude is reached. Currently, the balloon is not at full volume because of the high atmospheric pressure at ground level. What is the pressure when the balloon rises to a point where the temperature is -10.0°C and the balloon has completely expaned to full volume, filled with the H2 gas?
Answers: 3
Chemistry, 21.06.2019 18:00, darg3990rgp2t0r2
Does anyone know a lot about how to: - calculate mass of magnesium metal - calculate the actual yield of magnesium oxide - calculate the theoretical yield of mgo - calculate the percent yield of mgo - determine the percent yield of mgo - determine the average percent yield of mgo i had to do an online lab and its asking these questions but i have no idea where to start or how to be able to find these things. i can post the chart of the data from the lab or if you can tell me exactly how i can find each.
Answers: 3
Chemistry, 22.06.2019 16:50, TheOriginal2x
Assuming complete dissociation of the solute, how many grams of kno3 must be added to 275 ml of water to produce a solution that freezes at -14.5 c? the freezing point for pure water is 0.0 c and k_f is equal to 1.86 c/m
Answers: 3
Chemistry, 23.06.2019 03:30, LlayahHarbin
Ahelium balloon contains 16.9 l of helium at stp. how many atoms of helium are in the balloon
Answers: 1
You fill a weather balloon with 10 moles of helium (He)gas. Consider that the gas will expand greatl...