Asample of sodium carbonate unknown is dissolved in 50.0 ml of water. after performing experiment 3, the student determines that the second equivalence point occurs at 32.86 ml of 0.1115 m hcl. what is the theoretical ph of the solution after 35.00 ml of hcl have been added? report your answer to two significant figures.

You are performing an experiment in a lab to attempt a new method of producing pure elements from compounds. the only problem is that you do not know what element will form. by your previous calculations you know that you will have 6.3 moles of product. when it is complete, you weigh it and determine you have 604.4 grams. what element have you produced?

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same