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0.45 mol BaSO4 have 2,698.10e23 sulfur atoms.

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What is the difference between SS304 and SS316?

304 is a low carbon modification of 302 SST (which is the general purpose austenitic or 18-8 SST) for restriction of carbide precipitation during welding. 304L is a lower carbon modification of 304 for further restriction of carbide precipitation during welding. Max carbon in 304 is 0.08 versus 0.15 in 302 and 0.03 in 304L. 316 is more corrosion resistant than 302 and 304, with higher creep strength, primarily due to the higher Nickel content. 316L is again primarily used for welded construction. 316 has the same carbon content as 304 and 316L as 304L. 302 304 304L 316 316L Cr 17/19 18/20 18/20 16/18 16/18 Ni 8/10 8/12 8/12 10/14 10/14 C max 0.15 0.08 0.03 0.08 0.03 Mn max 2.0 2.0 2.0 2.0 2.0 Si max 1.0 1.0 1.0 1.0 1.0 P max .045 .045 .045 .045 .045 S max .03 .03 .03 .03 .03 Other - - - Mo 2.0/3.0 316L can be used in place of 316 in all applications but the reverse is not true. 316L should be used for welded structures requiring high corrosion resistance. 316L is more expensive than 316 in most regions of the world.


What is the formula for the corrected boiling point of a liquid?

The formula for the corrected boiling point of a liquid is: Corrected boiling point = Observed boiling point + (Kb * m), where Kb is the boiling point elevation constant and m is the molality of the solute in the solution.


What is the pH of 045 M of KCN?

Given:C=0.45M We know that the dissociation constant (Ka) of HCN=6.28 X10-10 Solution: KCN is salt of strong acid and weak base. Kh=Kw/Ka Kh=1 X 10-14/6.2 * 10-10 Kh =1.613 X10-5 ---- Kh=h2C h2=Kh/C =1.613 X 10-5/0.45 =0.3584 X10-4 ---- h=\/0.3584 X 10-4 h =0.6 X 10-2 ---- For a salt of weak acid and strong base, [OH-] = h X C =0.6 * 10-2 X 0.45 [OH-] =2.7 X 10-3 ---- pOH = -log[OH-] =-[log (2.7 X 10-3)] =-[-3 log 10 + log 2.7] =-[-3 + 0.4314] =3 - 0.4314 pOH = 2.5686 ---- pH + pOH = 14 pH = 14 - pOH =14 - 2.5686 pH = 11.4314 ---- Therefore the pH of 0.45M KCN is = 11.4314.