Recent content by NY152

Homework Statement Predict the major product and type of reaction mechanism (E1/E2/SN1/SN2) Homework EquationsThe Attempt at a Solution Could someone just double check my work for this? From top to bottom I got: E2, E1, SN1, E1

Could someone explain to me why the ring structures in this photo are diastereomers? From looking at them, I see a plane of symmetry, and no chiral centers so I'm unsure how they're diastereomers without have R/S characteristics

Any more input about this problem? I still can't seem to get the right answer

Ok O Okay so I did: 4186*0.340194*(13-T) = 2090*0.16*(T+19.5) and found Tf=6.82 and the system says this is incorrect but the hint says "You may have forgotten that ice experiences phase change at 0 degrees celsius. Take into account the latent heat. As stated before, I'm not sure how to...

Homework Statement Soda from a ms=12 oz can at temperature Ts=13 degrees C is poured in its entirety into a glass containing a mass mI=0.16kg amount of ice at temperature TI=-19.5 degrees C. Assume that ice and water have the following specfic heats c1=2090 J/(kg*C) and cs= 4186 J/(kg*C), and...

The mass defect would be around -4, but so then how do you incorporate the 2.183 mol of Th??

Well I don't really know what to do with that number now. How do I incorporate it into the change in mass?

Would you do 500 g Th * 1 mol Th/229.03175 g Th = 2.183 mol Th

Homework Statement Determine the energy change, delta E, in J when 500 g of 229/90 Th undergoes the following nuclear reaction: 229/90 Th --> 225/88 Ra + 4/2 He The nuclear masses in amu or g/mol are: Th-229: 229.03175; Ra-225: 225.02360; He-4: 4.00260 Homework Equations delta E = deltam(c)^2...

Oh okay, so I'd do the same sort of math setup but use 95.25% and 97.05% instead?

Okay so I did ((69.5 kg/1000 kg/m^3)*(4.75/100))-((69.5/1000 kg/m^3)(2.95/100))= .00125 m^3 then converted that to liters which is 1.25 Liters. The homework system says "it looks like you may have confused the denominator and the numerator, check your algebra" Not sure where I'm going wrong here...

Homework Statement A 69.5 kg man floats in freshwater with 2.95% of his volume above water when his lungs are empty, and 4.75% of his volume above water when his lungs are full. Calculate the volume of air, in liters, that he inhales (this is called his lung capacity). Neglect the weight of air...

Sorry about that, and there are two forces acting on it, but you find the mass later by doing the sum of the torques=I*alpha That wouldn't apply to this would it?

Homework Statement At a fair, Hank and Finn play with a horizontal 5.4 m long bar able to rotate about a pole going through its exact center. Hank pushes with 32 N at one end of the bar and Finn pushes with 18 N in the opposite direction at the other end. (Assume both forces are always...

Homework Statement Will momentum not be conserved in the case of a free fall because gravity is considered an external force? Is this because the system is not isolated? If this is the case, I understand the concept now, but could someone give me another example of an external force that will...