# Posts by Supaman

Total # Posts: 17

chemistry
For the balanced equation shown below, how many moles of F2 be produced by 0.8622 moles of C2H3F3? 4C2H3F3+7O2 --> 8CO+6H2O+6F2

chemistry
For the balanced equation shown below, how many moles of O2 will REACT with 0.6614 moles of NO? 2NO+O2 --> 2NO2

chemistry
For the balanced equation shown below, how many moles of SO2 be PRODUCED, by 0.9807 moles of ZnS? 2ZnS+3O2 --> 2ZnO+2SO2

chemistry
For the balanced equation shown below, how many moles of C4H10O reacted, if 0.5599 moles of H2O are produced? C4H10O+6O2 --> 4CO2+5H2O

chemistry
For the balanced equation shown below,how many moles of (NH4)2Cr2O7 reacted, if 0.8353 moles of Cr2O3 are produced? (NH4)2Cr2O7 --> N2+4H2O+Cr2O3

Chemistry
How can one count carbon atoms, eg. in the international mass standard stored in PAris. By mass spectroscopy?

French translation
Découvir en donnant Et donner en découvrant Tu trouveras ta place au coeur des tiens Discover while giving, give while discovering, you will find you place in your(singular???) hearts. And another question. How would one say "I like that a lot" or "...

Geometry
but how does (a + kp)x + (b + kq)y +c + kr = 0 relate to y-y' = m (x - x')?

Geometry
Letting L1=ax+by+c=0 and L2=px+qy+r=0. The equation of anyline passing through the intersection of L1 and L2 is L1+kL2=0 where k is a variable depending on just how the actual line through the point is. Can anyone prove this because all i get is 0=0.

basic chem
why is it not smart to replace coefficients in a blanced equation with the mass of each substance?

Physics
The international standard Kilogram in Paris is stored under double bell jars. What is the prupose of the jars? Is it because the jars create a vacuum to prevent the standard from gaining mass due to oxidation? If so, why double jars? Are there any other reasons?

English
What does the phrase "like a pig going for truffles" represent? Persistence?

Chemistry
For the autoionisation of water, it looks like 2H2O(l)-> H3O+(aq) + OH–(aq) I thought that becuase it is going from liquid to ions, wouldnt the Entropy be greater than 0? However, I have been told and I have calculated the opposite, that entropy is less than 0. Please ...

introduction to psychology
maybe its the fact that its a TWO hour drive..... thatd stress me out if I had to do it daily

Chem
For the autoionisation of water, it looks like 2H2O(l)-> H3O+(aq) + OH–(aq) I thought that becuase it is going from liquid to ions, wouldnt the Entropy be greater than 0? However, I have been told and I have calculated the opposite, that entropy is less than 0. Please ...

thermochem
WHen talking about phase transitions, in a graph of Temperature vs. Heat Capacity, does the PT occur at when the graph has a gradient of 0 or somewhere else?

Chem
How would one calculate change in enthalpy only knowing heat capacities of all substances involved/required? at a known T... WOuld you use a multi-stepped pathway and if so, how?

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