Chemistry, 06.11.2020 05:00 joanna3895
Robert Boyle did not believe that water was one of the basic elements that all substance was made of. To test this, he conducted an experiment where he ran an electric current through water. He placed two test tubes
above each of the terminals of the electricity source and collected the gas that came out. He repeated the
experiment a total of three times, each time using the same amount of water and the same level of electric
current. These are his experimental results: what is the dependent variable in this experiment
Answers: 3
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Which equation represents a fission reaction? o "9n+hβ150 o 235u + nβ190cs + rb+25 o be + heβ1c + in o 28 np β> 2390 pute
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Chemistry, 22.06.2019 08:00
Match the mixture with the substance// i really need on this guys (itβs a pic btw)
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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) β h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 Β°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
Chemistry, 22.06.2019 13:00
In what environment would mineral formation caused by high pressures and high temperatures most likely occur?
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Robert Boyle did not believe that water was one of the basic elements that all substance was made of...
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