Prepare 200 ml of 0.1 m phosphate buffer, ph 6.7 by combining the correct volumes of separately prepared stock solution of 0.2 m of na2hpo4 and nah2po4. do it again say to make a solution that is 7.4

There is no reason to think the results are biased or not conducted properly but you should not assume the results are correct just because they were done in a laboratory so the answer would be c. it is likely to be reliable because the results support the conclusion presented.

The bergeron process.

The answer will be +250