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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]
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Chemistry, 22.06.2019 20:40
Select the correct value for the indicated bond angle in each of the compounds. oâoâooâoâo angle of o3 90° 109.5° < 109.5° 120° < 120° 180° fâbâffâbâf angle of bf3 180° < 109.5° < 120° 120° 109.5° 90° fâoâffâoâf angle of of2 < 120° 120° 90° 109.5° 180° < 109.5° clâbeâclclâbeâcl angle of becl2 90° 109.5° 180° 120° < 109.5° < 120° fâpâffâpâf angle of pf3 90° 109.5° < 109.5° 180° 120° < 120° hâcâhhâcâh angle of ch4 90° < 109.5° 180° 120° < 120° 109.5°
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Chemistry, 23.06.2019 01:00
How does carbon monoxide pose the greatest threat to humans? a. it can be produced by wood fires. b. it can be produced by home furnaces. c. it is produced by acid rain. d. it is produced by modern automobiles.
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Chemistry, 23.06.2019 01:50
Ablock of aluminum is dropped into a graduated cylinder with an initial volume of water at 75ml and the volumes rises to 90ml. if the block has a mass of 40.5 g what is its density ?
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