Chemistry, 10.08.2021 01:00 WhirlyWave
Write two or three sentences comparing an open beaker to a sealed flask with regard to the conservation laws each system obeys within its boundaries. (Remember, the conservation laws are always obeyed on a large scale, but they are not always obeyed within a system's boundaries.) (2 points)
Answers: 3
Chemistry, 22.06.2019 02:30
Based on the equation and the information in the table, what is the enthalpy of the reaction?
Answers: 2
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 00:30
Which radioisotope is used to date fossils? a. oxygen-16 b. carbon-14 c. uranium-238 d. carbon-12
Answers: 2
Write two or three sentences comparing an open beaker to a sealed flask with regard to the conservat...
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