a. the formation of a gas
Chemistry, 05.02.2021 22:50 emilyanneK2540
Which indicator of a chemical reaction is shown in the
picture?
a. the formation of a gas
b. the formation of a precipitate
c. a change in energy
Answers: 1
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Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.
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Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?
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Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.
Answers: 3
Which indicator of a chemical reaction is shown in the
picture?
a. the formation of a gas
a. the formation of a gas
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