Chemistry, 04.11.2020 19:20 brianna4357
Temperature in degrees Fahrenheit can be converted to Celsius by first subtracting 32, then dividing by 1.8. What is the Celsius temperature outside on a warm day (88°F)?
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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) → 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.)
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Chemistry, 22.06.2019 12:00
Which of the following units is not an official si unit? mole liter kilogram ampere
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Chemistry, 22.06.2019 16:30
Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory
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Chemistry, 22.06.2019 16:50
Which element is least likely to undergo a chemical reaction
Answers: 3
Temperature in degrees Fahrenheit can be converted to Celsius by first subtracting 32, then dividing...
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