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Narasaq
Questions (14)
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
1 answer
478 views
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
1 answer
420 views
I have to solve this combustion problem using Dimensional Analysis and molar heat:
2 C2H6 +7O2 yields 4 CO2 + 6H2O + 3120 kJ The
3 answers
642 views
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
3 answers
561 views
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?
1 answer
439 views
How many grams does 3.45 moles of FeCl3 weigh? I got 162.2 grams.
3 answers
1,310 views
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
1 answer
869 views
Would Mg+Ca(NO3)2 yield Mg(NO3)2)+Ca? Thank you for checking.
1 answer
375 views
MgSO4+2K yields K2SO4+Mg. Would the oxidation reaction be 2K yields K2+e-2?And would the reduction be MG+e- yields Mg? Thanks.
2 answers
860 views
I'm doing the single replacement reaction Mg +FeF3. Would it yield MgF3+Fe? What about the single replacement reaction Li+K2SO4?
1 answer
442 views
Does _Mg+_Ca(NO3) yields_______?
I got 2Mg +Ca yields (NO3)2+2MgCa. Is this correct? Thanks for explaining!
1 answer
504 views
The red-ox reaction is MgSO4+2K yields K2 SO4+Mg. I thought the oxidation reaction is 2 k yields K2(subscript) + e^-2. I said
1 answer
885 views
I have to decide whether these replacement reactions can happen.
1. K + NaNO3 What do you do when there are multiple elements?
1 answer
483 views
I've been given a V with 51 as the mass number, 23 as the atomic number, and +5 as the charge. Would this mean that its proton
1 answer
533 views
Answers (6)
I took 8 moles and multiplied it by 3120 KJ and divided that by 6 moles to get 4160KJ
25.284 x 10^23 atoms?
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
By paper, do you mean essay? If so, then I would say when I revise a paper, I read it four (minimum) times through. The first time, I read it for style, and word choice. I see if I can make any points more clear, add more detail, or use better vocabulary.
There are just a few suggestions I have. I found it to be a very interesting paper, and it was well-written overall. ~Maybe explain more why he thought God was dead. Was there a specific situation that proved this to him, rather than just modern society in
A headline shows you what information is really important--usually the company name, or sometimes a memorable slogan, the date of a sale, or a new deal going on. This is why the nitty gritty is often put in small print at the bottom, because the company
