6. A reaction is performed between hydrochloric acid and hydroxylamine, NH, OH (K) = 8.8 x 10-9). A volume of 15.0 mL of
0.234 mol/L hydrochloric acid is added to 45.0 mL of 0.321
hydroxylamine. Determine the pH of the resulting solution. SHOW
ALL YOUR WORK.

it should be all of them because it asks if you included all of those in your answer

explanation:

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

you need to stop taking that class

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.