put have has or had where appropriate in the following sentence, Exam malpracticesbecome a serious issue​

Achemistry student weighs out of phosphoric acid , a triprotic acid, into a volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with solution. calculate the volume of solution the student will need to add to reach the final equivalence point. round your answer to significant digits.

If the same amount of cacl2 is added to equal volumes of water and maple syrup, which will have the higher temperature?

Match the mixture with the substance// i really need on this guys (it’s a pic btw)