4He 4.00260 3H 3.01605 1.00783

How many moles of methane must be burned to generate the energy produced by fission of 0.560 mol(132 gg) of uranium-235

Two reactors are connected by a small valve (whose volume can be ignored). The larger one has a volume of 3.00 L and contains F2 at a pressure of 3.000 bar. The small one has a volume of 2.00 L and contains Cl2at a pressure of 2.000 bar. The whole system is kept at 328 °C. When the valve between the chambers is opened, the following reaction occurs: 3 F2(g) + Cl2(g) → 2 ClF3(g) Calculate the mole fractions and partial pressures of all species present after reaction. [Cl2: 14.3% and 0.200 bar; ClF3: 85.7% and 1.20 bar] What is the significance of the coefficients in a balanced chemical equation? How were they used in the question you were assigned?

What is the relationship between bond length and pKa?

If ötzi were indeed a recent corpse, made to look old by the harsh weather conditions found on the high mountain pass, what would you expect the ratio of 14c to 12c to be, relative to that in your own body

Which process would turn Rn-210 into Po-206?

Write the daughter nucleus product in the following nuclear processes: Beta emission of manganese-56 Gallium-67 decays by electron capture Potassium-38 decays by positron emission.

If a match contained 0.265 g of P4S3, what would be the energy released in kJ?

What is the mass, in megagrams, of 0.3% I would be necessary to form 22271.1L NaIO3 ?

Naturally occurring uranium contains about 0.7% of the fissionable isotope 235U, with almost all the rest 238U. Since gaseous 235UF6 diffuses about 0.4% faster than 235UF6 , diffusion produces a mixture that is slightly enriched in 235UF6 . Multiple diffusion steps – hundreds are needed – can then produce the necessary 235U concentration for use in reactors or bombs. A sample of 235UF6 gas in a 15,000 L cylinder exerts a pressure of 167 kPa. The root-mean-square speed of the 235UF6 molecules is 159 m/s. What is the temperature of the sample of 235UF6 gas? _______K