Bubbles forming in soda is the best answer
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Answer:
shell and tube type heat exchanger
Explanation:
for evaporation the shell and tube type heat exchanger is best suited.
- in the plate heat exchanger there is gaskets in between every part so this part become weak part in heat echanger and there is possibilities of leakage through this part, there is no such problem in shell and tube type.
- the plate type cant be used when there is high temperature and high pressure drop but shell and tube type can be used
- in evaporation there the liquids change into vapors due to which there is sudden change in pressure and in which plate type is not used because there is chances of leakage
Nitrous acid is HNO2. Its dissociation is HNO2 = H(+) + NO2(-). The equilibrium constant, Ka = [H+][NO2-]/[HNO2] => x^2 / (0.20 - x). Given that it is a weak acid (Ka = 4.6 * 10^ -4),you can use a very good approxiamation: 0.20 >> x => 0.20 - x = 0.20, and this permits you to solve the value of x more easily. => 4.6 * 10^-4 = (x^2) / 0.20 => x^2 = 0.20 * 4.6 * 10^ -4 = 0.92 * 10^-4 => x = 9.59 * 10^ -3. Now,calculate pH = log { 1 / [H+] } = log { 1 / (9.59 * 10 ^-3) } = 2.02. <span>Answer pH = 2.02</span>
Answer:
it shows the breakdown of the atom
Explanation:
it will show it molecularly
Density is mass by volume
1 mL of nitric acid solution has a mass of 1.36 g
therefore 1000 mL has a mass of 1360 g
the molarity of solution is 2.48 mol/L
1 L of solution has 2.48 mol
the mass of 2.48 mol of HNO₃ is - 2.48 mol x 63 g/mol = 156.24 g
this means that 156.24 g of the solution consists of nitric acid
therefore percentage by mass - mass of nitric acid / total mass x 100%
concentration as percentage by mass = 156.24 g / 1360 g x 100%
percentage = 11.5%
