(i)what mass of carbon dioxide (in kg) is produced upon the complete combustion of
18.9 l of propane (approximate contents of one 5-gallon tank)? assume that the
density of the liquid propane in the tank is 0.621 g/ml . (hint: begin by writing
a balanced equation for the combustion reaction.)
m=? kg
(ii) a 22.0 - ml sample of an unknown h3po4 solution is titrated with a 0.110 m naoh
solution. the equivalence point is reached when 18.60 ml of naoh solution is added.
what is the concentration of the unknown h3po4 solution? the neutralization reaction is as
follows:
h3po4(aq) + 3naoh(aq) > 3h2o(l) + na3po4(aq)
m=?
Answers: 1
Chemistry, 21.06.2019 22:00
If the particles in a sample of matter have an orderly arrangement and move only in place, the sample is a
Answers: 1
Chemistry, 22.06.2019 05:00
You mix the pks of succinic acid are 4.21 and 5.64. how many gramsa graduate student at sdsu wants to measure the activity of a particular enzyme at ph 4.0. to buffer her reaction, she will use a buffer system based on one of the acids listed below, which acid is most appropriate for the experiment? of monosodium succinate (fw = 140 g/mol) and disodium succinate (fw = 162 g/mol) must be added to 1 l of water to produce a solution with a ph 5.28 and a total solute concentration of 100 mm? (assume the total volume remains 1 liter, answer in grams monosodium succinate, grams disodium succinate, respectively.) volumes of 0.05 m nah2po4 and 0.05 m na2hpo4 (pk's for phosphoric acid are 2.15, 6.82 and 12.38). which of the following best describes the resulting solution?
Answers: 2
Chemistry, 22.06.2019 09:00
What type of energy do chemical bonds have? what type of energy is it converted to during chemical reactions? question 15 options: chemical bonds have kinetic energy, which is converted to potential energy during chemical reactions. chemical bonds have electric energy, which is converted to potential energy during chemical reactions. chemical bonds have heat energy, which is converted to kinetic energy during chemical reactions. chemical bonds have potential energy, which is converted to heat energy during chemical reactions.
Answers: 1
Chemistry, 22.06.2019 23:30
With the largest atoms and the smallest number of valence electrons and with the smallest atoms and the greatest number of valence electrons are the most reactive. a. nonmetals; metals b. nonmetals; transition elements c. transition elements; metals d. metals; nonmetals
Answers: 3
(i)what mass of carbon dioxide (in kg) is produced upon the complete combustion of
18.9...
18.9...
History, 24.08.2019 17:20
Chemistry, 24.08.2019 17:20
Physics, 24.08.2019 17:20
History, 24.08.2019 17:20
History, 24.08.2019 17:20
Mathematics, 24.08.2019 17:20
Biology, 24.08.2019 17:20
Biology, 24.08.2019 17:20
Physics, 24.08.2019 17:20
Health, 24.08.2019 17:20
Mathematics, 24.08.2019 17:20
Mathematics, 24.08.2019 17:20
Mathematics, 24.08.2019 17:20
Social Studies, 24.08.2019 17:20