Chemistry, 09.12.2020 18:50 dwhitlock10
Which of the following is a physical change:
a. turning solid sodium to and chlorine gas to salt
b. forming a mixture
c. food turning into waste in the intestines
d. burning wood
Answers: 1
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In a heat of an engine, if 700 j enters the system, and the piston does 400 j of work what is the final internal (thermal) energy of the system if the initial energy is 1,500 j
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Citric acid has a ph between 1 and 3. it is considered to be aa. weak acidb. weak basec. strong based. strong acid
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Which of these is an example of pseudoscience? a) predicting the time of sunrise based on data on position of earth b) predicting the date of the moon phases based on data on position of earth c) predicting eclipses based on the position of the sun and the moon d) predicting future events in a person's life based on the position of the moon
Answers: 1
Which of the following is a physical change:
a. turning solid sodium to and chlorine gas to salt
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