subject
Chemistry, 26.09.2019 08:10 ryliekarenbowers

When a chemical property is observed, the identity of the substance changes. a. sometimes b. never c. always d. rarely

ansver
Answers: 2

Another question on Chemistry

question
Chemistry, 22.06.2019 06:20
What is a property of a double replacement reaction
Answers: 1
question
Chemistry, 22.06.2019 09:00
Astudent is asked to identify and element that is pale yellow brittle solid and does not conduct electricity. at which location in this periodic table would the element most likely be found?
Answers: 2
question
Chemistry, 22.06.2019 11:30
Which statement best describes the flow of energy in this scenario
Answers: 1
question
Chemistry, 22.06.2019 11:40
Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)
Answers: 1
You know the right answer?
When a chemical property is observed, the identity of the substance changes. a. sometimes b. never...
Questions
question
Mathematics, 19.08.2019 07:50
question
Mathematics, 19.08.2019 07:50
question
Mathematics, 19.08.2019 07:50
question
Mathematics, 19.08.2019 07:50
question
Biology, 19.08.2019 07:50
question
Mathematics, 19.08.2019 07:50
Questions on the website: 13722363