Astudent has a solution with a ph of 7. the student adds hf, hydrogen floride, to the solution, hoping to increases the ph of the solution. what is wrong with this student's approach?

select one: a. you cannot change the ph of a solution. b. hf is an acid, so it will lower the ph of the solution. c. the ph of the solution is already as high as possible. d. the ph is 7, so the solution is already as acidic as possible.

What are the constituent metals of stainless steel?

When the mercury level in a barometer decreases that atmospheric pressure has

Gusing the milligrams of ascorbic acid you entered above, the ratio of total sample volume to aliquot volume, and the total milligrams of the vitamin c tablet that you dissolved, calculate the mass of ascorbic acid in the vitamin c tablet for each trial. do this by scaling up to find the amount (mg) of ascorbic acid in your 250 ml flask. enter your calculated mass of ascorbic acid in the vitamin c tablet, for each trial. be sure to enter your calculated mass in the corresponding order that you entered your milligrams of ascorbic acid. the milligrams of ascorbic acid you entered for entry #1 previously should correspond to the mass of ascorbic acid that you enter for entry #1 here.