Chemistry, 02.07.2019 16:50 ricksterv5000
Which statement best describes the difference between a physical change and a chemical change? a. a chemical change results in a new element being formed, and a physical change results in a new compound being formed. b. a physical change is a change from one state of matter to another; a chemical change results in a new substance formed. c. a physical change produces a new element, and a chemical change results in a bond breaking between atoms. d. a chemical change does not result in a new substance being formed, whereas a physical change does.
Answers: 2
Chemistry, 21.06.2019 15:40
Achemistry student weighs out of phosphoric acid , a triprotic acid, into a volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with solution. calculate the volume of solution the student will need to add to reach the final equivalence point. round your answer to significant digits.
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Chemistry, 21.06.2019 20:30
The first element on the periodic table of elements is carbon. a. true b. false
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Chemistry, 21.06.2019 20:30
Pbco3 –> pbo+ co2. how many liters of carbon dioxide gas is produced from the decomposition of 32 grams of lead (ll) carbonate?
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Chemistry, 22.06.2019 06:00
An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have
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Which statement best describes the difference between a physical change and a chemical change? a. a...
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