Suppose now that you wanted to determine the density of a small crystal to confirm that it is boron. from the literature, you know that boron has a density of 2.34 g/cm^3. how would you prepare 20.0 ml of the liquid mixture having that density from pure samples of chci3 ( d= 1.492 g/ml) and chbr3( d= 2.890 g/ml)? (note: 1 ml = 1 cm^3.)

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

the temperature of the gas, in k, not celsius.

thats how its supposed to be

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.