Answers: 1
Chemistry, 22.06.2019 18:00
Answer asap need it by wednesday morning carry out the following calculations on ph and ka of from data. i. calculate the ph of 0.02m hcl ii. calculate the ph of 0.036m naoh iii. calculate the ph of 0.36m ca(oh)2 iv. calculate the ph of 0.16m ch3cooh which has ka = 1.74 x 10-5 mol dm-3 v. calculate ka for weak acid ha which has a ph of 3.65 at 0.30m concentration vi. calculate the ka of a solution made by mixing 15.0 cm3 0.2m ha and 60.0 cm3 0.31m a-. [ph= 3.80] vii. calculate the ph of a solution made by mixing 15.0 cm3 0.1m naoh and 35.0 cm3 0.2m hcooh. [ka = 1.82 x 10-4 m]
Answers: 1
Chemistry, 23.06.2019 07:30
Can you guys answer these questions i need it before 1: 00pm
Answers: 3
Chemistry, 23.06.2019 10:00
The temperature of a lead fishing weight rises from 26 Β°c to 38 Β°c as it absorbs 11.3 j of heat. what is the mass of the fishing weight in grams?
Answers: 2
Chemistry, 23.06.2019 10:30
4al + 3o2 β 2al2o3 what does the "3" in front of o2 stand for? a) it indicates that there are 5 oxygen atoms after you add the coefficient and the subscript. b) it indicates that that there are are total of 6 oxygen atoms all bonded together as a single molecule. c) it indicates that there are 3 oxygen molecules chemically bonded to each other in the reaction. d) it indicates that there are 3 separate oxygen molecules in the reaction.
Answers: 2
What is the fraction of an original sample of tritium that remains unchanged after 24.62 years...
Biology, 23.05.2020 17:59
Mathematics, 23.05.2020 17:59
Mathematics, 23.05.2020 17:59
Mathematics, 23.05.2020 17:59
Mathematics, 23.05.2020 17:59
Computers and Technology, 23.05.2020 18:00
Mathematics, 23.05.2020 18:00