Chemistry, 16.04.2021 04:00, naomirice24
The synthesis of barium sulfate was performed by dissolving 2.00 g of sodium sulfate in water and
adding the solution to another solution prepared by dissolving 2.50 g of barium chloride in water. The
precipitate consisting of barium sulfate was filtered, washed, dried and weighed. The mass of the
precipitate was found to be 2.56 g.
Na So.(aq) + BaCl2(aq) → Baso.(s) + 2 NaCl(aq)
a) Calculate the moles of each reactant.
b) Identify the limiting reactant. Justify your selection.
c) Find the theoretical yield of barium sulfate.
d) What is the percent yield of the reaction.
e) What is the mass of the excess reactant left over after the reaction stops?
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
Chemistry, 22.06.2019 18:10, bri9263
Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.
Answers: 3
Chemistry, 23.06.2019 00:00, PineappleDevil889
2-bromo-2-methylbutane undergoes an e1 elimination reaction in the presence of ethanol. in the next reaction only one of the possible products is represented. although the product shown is not the major product of the reaction, notice that there is more than one way it can be produced. complete the mechanism and draw the missing substances.
Answers: 1
The synthesis of barium sulfate was performed by dissolving 2.00 g of sodium sulfate in water and
a...