Chemistry, 28.07.2019 06:00 sandyykn192
Me with 5 questions that would be nice. which pair of elements are the most common found in the sun? a. helium and oxygen b. carbon and hydrogen c. hydrogen and helium d. helium and oxygen
Answers: 2
Chemistry, 22.06.2019 03:40, kellypechacekoyc1b3
Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.
Answers: 3
Chemistry, 22.06.2019 15:30, christopherluckey7
The reactions of photosynthesis occur in the of plant cell? a. mitochondria. b. lysosomes. c. chloroplasts. d. chlorophyll
Answers: 1
Chemistry, 22.06.2019 18:00, kingamir
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
Me with 5 questions that would be nice. which pair of elements are the most common found in the sun...
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