Chemistry, 16.07.2019 03:40 luislopez05
Is crushing a rock a chemical or physical change?
Answers: 1
Chemistry, 22.06.2019 10:00
Part 1: include important facts found through your research. part 2: include your visual display. include your summary of âthe chemistry of waterâ from the national science foundation website. include your experiment. part 3: include responses to the reflection questions.
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Chemistry, 22.06.2019 21:20
One way in which the useful metal copper is produced is by dissolving the mineral azurite, which contains copper(ii) carbonate, in concentrated sulfuric acid. the sulfuric acid reacts with the copper(ii) carbonate to produce a blue solution of copper(ii) sulfate. scrap iron is then added to this solution, and pure copper metal precipitates out because of the following chemical reaction: (s) (aq) (s) (aq) suppose an industrial quality-control chemist analyzes a sample from a copper processing plant in the following way. he adds powdered iron to a copper(ii) sulfate sample from the plant until no more copper will precipitate. he then washes, dries, and weighs the precipitate, and finds that it has a mass of .
Answers: 2
Chemistry, 23.06.2019 00:30
What are the advantages of using the metric system? designed as a decimal system making conversions simpler more accurate system of measurement has prefixes that correspond to an amount to use with all base units used by the entire scientific community
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Chemistry, 23.06.2019 02:50
What is the typical rotational frequency frot for a molecule like n2 at room temperature (25âc)? assume that d for this molecule is 1ĂĽ=10â10m. take the total mass of an n2 molecule to be mn2=4.65Ă10â26kg. you will need to account for rotations around two axes (not just one) to find the correct frequency. express frot numerically in hertz, to three significant figures.
Answers: 3
Is crushing a rock a chemical or physical change?...
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