1. a student needs to make 80ml of a 4.5 x 10^-3 m solution of h_3po_4 (mm = 98) from solid. describe how the student would do this.
2. how many moles of alf_2 are in 4900 ml of of a 5.6m solution? how many moles of f^- is there?
3. describe how you would make 750 ml of a .80m solution of bacl_2 from a stock solution that is 2.0m?
Answers: 3
Chemistry, 22.06.2019 01:00
The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?
Answers: 3
Chemistry, 22.06.2019 22:30
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.
Answers: 1
1. a student needs to make 80ml of a 4.5 x 10^-3 m solution of h_3po_4 (mm = 98) from solid. describ...
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