Chemistry, 21.05.2020 19:58, honwismun1127
Which of the following would be evidence that a chemical reaction has occurred? (Select all that apply.) *
a change in shape
a precipitate is formed
an unexpected change in color
the formation of gas bubbles
smoke begins to form
clear liquids remain clear
the odor changes
the substance becomes very cold
Answers: 1
Chemistry, 22.06.2019 14:00, ashlynneboogs0056
8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.
Answers: 3
Chemistry, 22.06.2019 14:50, ladybugperez05
Which of the following is most likely true about water in chemical systems? a) water dissolves nonpolar ionic compounds. b) water dissociates ionic compounds. c) water dissociates covalent molecules. d) water dissolves nonpolar covalent substances.
Answers: 1
Chemistry, 23.06.2019 01:00, Johnson926
Which elements are found in glucose, the product of photosynthesis? a. carbon, hydrogen, and oxygen b. carbon and hydrogen c. carbon, nitrogen, and oxygen d. hydrogen, nitrogen, and carbon
Answers: 2
Which of the following would be evidence that a chemical reaction has occurred? (Select all that app...
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