Chemistry, 24.06.2019 15:30 hapjajsjjz3738
The existence of isotopes violates one of the original ideas of dalton's atomic theory. which one? matter is composed of exceedingly small particles called atoms. an atom is the smallest unit of an element that can participate in a chemical change. an element consists of only one type of atom, which has a mass that is characteristic of the element and is the same for all atoms of that element. atoms of one element differ in properties from atoms of all other elements. a compound consists of atoms of two or more elements combined in a small, whole-number ratio. in a given compound, the numbers of atoms of each of its elements are always present in the same ratio. atoms are neither created nor destroyed during a chemical change, but are instead rearranged to yield substances that are different from those present before the change.
Answers: 1
Chemistry, 22.06.2019 04:00
You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present
Answers: 1
Chemistry, 22.06.2019 04:20
Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.
Answers: 1
Chemistry, 22.06.2019 06:00
Ethanol (c2h5oh) is produced from the fermentation of sucrose in the presence of enzymes. c12h22o11(aq) + h2o(g) 4 c2h5oh(l) + 4 co2(g) determine the theoretical yield and the percent yields of ethanol if 680. g sucrose undergoes fermentation and 326.5 g ethanol is obtained. theoretical _ g _ percent %
Answers: 1
Chemistry, 22.06.2019 08:00
Identify a strong intermolecular force of attraction between an alcohol
Answers: 1
The existence of isotopes violates one of the original ideas of dalton's atomic theory. which one?...
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