Q-1: A) 0.50 mL of 96 % H2SO. (98 g/mol, density: 1.84 g/mL) was diluted 750 mL with ultrapure water. Calculate pH of this solution?
B) To prepare pH 2.3 bisulfate/sulfate buffer solutions, how much mL
of 2.52% (w/v) of KOH (56 g/mol) should
be added
to 500 mL of
above H2SO4 solution (a)? (If you cannot find the concentration of the
above diluted H SO,
solution (a), take the concentration of the diluted
H2SO4 solution as 0.015 M. In this case, the score of the question will
be 80% of the actual score) Kaj: .. Kaz:1.2x10-2

answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

hope it

b. th3 n4zc4 pl4t3 15 c0nv3rg1ng w1th the s0uth 4m3ric4n pl4t3.

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.