Chemistry, 10.04.2020 23:57 khikhi1705
The mass percent of carbon in pure glucose, C 6 H 12 O 6 , is 40.0 percent. A chemist analyzes an impure sample of glucose and determines that the mass percent of carbon is 38.2 percent. Which of the following impurities could account for the low mass percent of carbon in the sample?
A) Water, H 2 O
B) Ribose, C 5 H 10 O 5
C) Fructose, C 6 H 12 O 6 , an isomer of glucose
D) Sucrose, C 12 H 22 O 11
Answers: 2
Chemistry, 22.06.2019 03:30
Asample of ammonia reacts with oxygen as shown. 4nh3(g) + 5o2(g) 4no(g) + 6h2o(g) what is the limiting reactant if 4.0 g of nh3 react with 8.0 g of oxygen? o2 because it produces only 0.20 mol of no. nh3 because it produces only 0.20 mol of no. o2 because it produces two times less no than nh3. nh3 because it produces three times more no than o2.
Answers: 3
Chemistry, 22.06.2019 07:00
In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?
Answers: 2
The mass percent of carbon in pure glucose, C 6 H 12 O 6 , is 40.0 percent. A chemist analyzes an im...
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