Chemistry
How mcuh heat is needed to raise the temperature of 80 grams of water by 30 degrees? I got AlphaQ=80xCx30. I know I'm solving for Alpha , but I don't know what the C would be or how to find it. Thanks for your help.
Chemistry
How many moles of ethane does it take to produce 8112 KJ in the reaction 2 C2H6 + 7O2 yields 4 CO2 + 6 H2O + 3120 KJ? I got 8112 kJ x 2 moles ethane/3120 kJ (5.2 moles).
Chemistry
I took 8 moles and multiplied it by 3120 KJ and divided that by 6 moles to get 4160KJ
Chemistry
I have to solve this combustion problem using Dimensional Analysis and molar heat: 2 C2H6 +7O2 yields 4 CO2 + 6H2O + 3120 kJ The question is to discover how much heat is produced along with 8 moles of water in this reaction. My problem is that I have no idea how to go about so...
Chemistry
25.284 x 10^23 atoms?
Chemistry
I am trying to figure out how many atoms are in 4.2 moles of BaO. I took 4.2 moles and multiplied it by 1/109.32, resulting in .038. Is this correct? Thanks hopefully this will be the final one.
Chemistry
How many atoms are there in 12 grams of Carbon? 12 grams 12.01 moles 6.02x10^23mol x x 1 gram 1 atom = 867.6024 Is this correct?
Chemistry
Fe=55.85 Cl=35.45x3=639.2 total: 695.05. 695 moles 1 gram 3.45 mole x x 1 mole I actually got a different answer this time, because I did the work differently. Basically I don't know how to do this sort of problem, so I just need a basic rundown on how to do it. Thanks for...
Chemistry
How many grams does 3.45 moles of FeCl3 weigh? I got 162.2 grams.
Chemistry
Is the molar mass of SiO2 60 g/mol (I took the molar mass of Silicon-28, and added Oxygen's atmoic mass-16 and doubled it since it's diatomic). Thanks for checking my work.
For Further Reading
