Chemistry, 03.09.2019 23:30 AikawaAisyah2438
Which statements accurately describe dmitri mendeleev’s contributions to the development of the periodic table? check all that apply.
mendeleev wrote the first modern chemistry textbook.
mendeleev produced the first orderly arrangement of known elements.
mendeleev ordered the elements by increasing atomic number.
mendeleev used patterns to predict undiscovered elements.
mendeleev accounted for variations resulting from isotopes.
Answers: 1
Chemistry, 22.06.2019 00:30
Butadiene undergoes a reaction at a certain temperature in the gas phase as follows: 2c4h6(g) --> c8h12(g) the following data were collected for this reaction: time (min) [c4h6] (m) 0 0.36 15 0.30 30 0.25 48 0.19 75 0. determine the order of the reaction and the rate constant. 1st order and k = 4.3x10 -4 s-1 1st order and k = 2.3x10-4 s-1 2nd order and k = 4.3x10-4 s-1 2nd order and k = 2.3x10-4 s-1 zero and k = 4.3x10-4 s-1
Answers: 3
Chemistry, 22.06.2019 01:20
Match the acid base pairs by arranging the acid name with the conjugate base formula. hydrogen carbonate hydrogen phosphate carbonic acid read water sulfuric acid phosphoric acid a. co32- b. hso4- c. hco3- d. po43- e. h2po4- f. oh-
Answers: 1
Chemistry, 22.06.2019 23:30
If maltose undergoes hydrolysis what subunits does it results to?
Answers: 2
Chemistry, 23.06.2019 06:30
How can the number of core electrons be determined from the periodic table
Answers: 1
Which statements accurately describe dmitri mendeleev’s contributions to the development of the peri...
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