Calculate the pH after 0.13 mol NaOH are added to 1.00 L of 0.50M HC2H3O2 and 0.80M NaC2H3O2 buffer solution, Ka= 1.3 x 10^-5. I really need help, I'm struggling with this topic. A buffer solution contains 0.50 HC2H3O2 and 0.80M NaC2H3O2. The volume of the solution is 1.00L. Ka= 1.3 x 10^-5
real answers only please im really struggling here

Using the thermodynamic information in the aleks data tab, calculate the standard reaction free energy of the following chemical reaction: →+p4o10s6h2ol4h3po4s round your answer to zero decimal places.

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks.energy was destroyed inside the blocks.energy was absorbed into the blocks from outside the system.energy was transferred from the warmer block to the cooler block.

Ab c or d ? i’m not sure what the answer is