Recent content by hermtm2

I've the idea from the wiki source. Thanks, Ryan.

Hi, these are questions from my exam from the mechanical behavior of materials. I seriously screwed the exam up. Can you guys help me out? a) Provide two reasons why C is more effective than Ni in strenghtening Fe. b) Explain why single crystalline alloys with fine grains are more...

So the cold temperature prevents changes in volume? I did not think about that. Thanks, Ryan.

Homework Statement A cube of aluminum is suspended deep in the ocean. Will it yield if it is placed deeper and deeper in the ocean? Homework Equations The Attempt at a Solution I guess that it will yield since the pressure from water will be stronger as it goes deeper...

100000 instead of 10E5 on Ti-89? Hi, guys. I've been using Ti-89 over 5 years so far. When the huge number such as 10^10 x 10^10 was calculated, it used to show me 1E20. Not anymore. I got 100000000000000000000... instead of 1E20. Can you guys help me out? Thanks.

So, one whole atom represents for one lattice point, right?

The number of lattice point in FCC? Hi, I am having a trouble to figure the number of lattie point in FCC structure out. My textbook said simple cubic has 1 lattice point, BCC has 2 points, and FCC has 4 points. However there is no further explanation or figures. I am a kind of understand...

I appreciate to clear that up. I didn't thought about the basic rule. The last question. How to get the energy? 238/94 Pu -----86yrs----> 4/2 He + 234/92 U + 5.59 Mev Does this mean that 1 mole of Pu generates 5.5Mev?

Could you explain about why it doesn't need to redivide by 3? Then how much Pu 238 is in PuO2? 244.06 g/mol x 7.24mol =1766.56g x 3(factor) = 5299.68g 16 g/mol x 14.49 mol = 231.84g x 3 = 695.52 g

Actually I quote the atomic weigh of 238 Pu in here. http://www.webqc.org/molecular-weight-of-Pu238.html They said Symbol Element Atomic weight Number of atoms Mass percent Pu Plutonium 244.0642 238 100.0000 %

The molar mass of 238-PuO2 is 276.06 g/mol by Wiki. So 6000g / (276.06g/mol) = 21.73 mol of PuO2. As the stoichiometric of PuO2, 21.73 mol / 3 = 7.24 mol 238Pu: 7.24 mol O2: 14.49 mol, right? Molar mass of 238 Pu is 244.06g/mol and O2 is 16g/mol...

The ratio of Pu238 and O2 in Plutonium dioxide? Hello, guys. I was wondering if I can find a ratio of Pu238 and O2 in PuO2. In my problem set, these are all I have. - 238/94 Pu -----86yrs----> 4/2 He + 234/92 U + 5.59 Mev - 238PuO2 : 6000 gram in a sphere (10 cm diameter) -...

Diamond vs graphite by a conductivity? Hello. This is the last question on HW. Q) Diamond and graphite are both made of carbon atoms. Explain why diamond is elecrically insulationg while graphite is a good conductor in terms of type(s) of hybridization of atomic orbitals and bonds in each...

Hello, guys. I am taking 200 level MSE course now. The one of the topic was the Kroger Vinky notation which my textbook doesn't have any examples. The professor explained it with 3 ppt slides shortly. Then he gave us a HW. Q) If TiO2 is exposed to reducing atmospheres at elevated temp...

Thanks, K^2.