Chemistry, 10.12.2020 02:00 chrissycherry
Jonas drew a diagram to compare two kinds of evidence that support the theory of evolution.
Which label belongs in the area marked Z?
no longer used by species
link two species to a common ancestor
evidence of adaptations to similar environments
part of comparative anatomy studies
Answers: 2
Chemistry, 22.06.2019 05:30
Describe the interaction that occurs between two objects with the same electrical charge.
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, 22.06.2019 19:00
Which is the solubility product expression for caf2(s)?  [ca2+]/[f–]2  [ca2+][f2–]  [ca]+[f]2  [ca2+][f–]2
Answers: 3
Chemistry, 22.06.2019 19:00
Which change to the system wood cause the freely-moving piston to lower?
Answers: 1
Jonas drew a diagram to compare two kinds of evidence that support the theory of evolution.
Which l...
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