Chemistry, 11.10.2020 14:01 HarleyQuinn117
Which of these is the subject of study in thermodynamics? Choose the correct answer.
a) energy changes
b) only physical changes
c) only chemical changes
d) structure of atoms and molecules
Answers: 3
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Elements that do not have full outer electron shells will donate, share, or take electrons from other atoms. choose the items that have the correct binary ionic formula.
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Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture
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Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)
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Chemistry, 22.06.2019 21:20
40dm3 of gas at 760 torr are heated from 5°c to 50°c what is the new volume
Answers: 3
Which of these is the subject of study in thermodynamics? Choose the correct answer.
a) energy chan...
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