Chemistry, 25.03.2021 14:00 lisbethtsu5309
1. A gas has a volume of 140L at 37 ºC and 620 kpa pressure. Calculate its volume at STP.
2. A helium balloon is filled to 2.5 L at 290 K. Outside, on a cold winter day, the balloon shrivels to 2.2 L. What is the outside temp in Kelvin?
3. What is the percent YIELD if 4.65g of copper (Cu) is actually produced when 1.87g of aluminum (Al) react with an excess of copper(II) sulfate (CuSO4)?
2Al + 3CuSO4 Al2(SO4)3 + 3Cu
Answers: 2
Chemistry, 22.06.2019 10:30
Acompound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (n) and 69.6% oxygen (o). what is its molecular formula? a. n2o4 b. no2 c. n2o d. n4o2
Answers: 1
Chemistry, 22.06.2019 16:50
Answer asap need it by wednesday morning calculate the ph of 0.02m hcl best answer will be brainliest
Answers: 1
Chemistry, 22.06.2019 18:30
How many moles of lead are in 1.50 x 10^12 atoms of lead? could you explain the answer as well and not just give it to me i am refreshing for finals and i need to know how to do it
Answers: 3
1. A gas has a volume of 140L at 37 ºC and 620 kpa pressure. Calculate its volume at STP.
2. A heli...
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