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Tichele
Questions (8)
Ok, so I’m working on this problem where I have to get electron per mole. I know that I need to get from Coulombs/mole of H2
1 answer
573 views
36.85 mL of a KMnO4 solution when acidified reacted with 1.076g of Mohr's salt, Fe(NH4)2(SO4)2 x 6H2O What is the normality of
2 answers
662 views
Ok, so here's my question:
If exactly 14.563 grams of KMnO4 were dissolved to yield 750 mL of solution waht would be the
2 answers
832 views
So, this is going to be more like 2 or 3 questions. Here goes.
First, what is the net-ionic reaction for Fe (III) + K4Fe(CN)6 be?
3 answers
559 views
2.50 mL of ethyl acetate and 2.50 mL of distilled water are added to the 5.00 mL of 3 Molar HCl and the mixture is allowed to
0 answers
643 views
In an experiment, 238 mL of 0.45 molar hydrochloric acid completely reacts with excess iron to produce hydrogen gas and iron
3 answers
837 views
A 3.23 gram sample of a sodium bicarbonate mixture was reacted with excess acid. 48.52 mL of the evolved gas was collected over
3 answers
780 views
If 50.0 kJ of heat are added to a 20.0 gram ice cube at -5.00 degrees Celsius, what will be the resulting state and temperature
6 answers
748 views
Answers (7)
Ok, I see.
I see. Thanks so much for your help!
Thank you so much! I was really stuck and my brain went completely blank.
Ok, so I've worked out the problem but I'm getting something like 6.6 x 10^-4 percent. That can't be right, can it? Here's my work: NaHCO3(s) + HCl(aq) ---> NaCl(aq) + CO2(g) + H2O(l) Pressure of the gas= pressure of atmosphere - pressure of 23.0 degrees
This might be a stupid question, but why do I convert to moles of CO2 first?
Ok, so I'm stuck....Here is my work thus far (please see my previous response for the values of fusion and vaporization, as well as the specific heats) q=m x specific heat x change in temp =20.0 g x (2.o92 J/g x Kelvin) x (0--5)=209.2 J So... 50,000 J -
All right. I'll go try and work on this problem and come back if I need some help. The specific heat of ice: 2.092 J/g-Kelvin The specific heat of water: 4.184 J/g-Kelvin The specific heat of steam: 1.841 J/g-Kelvin Heat of Fusion: 6.008 kJ/mol at 0.00
