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Describe and illustrate how liquids are different then the other states of matter....
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Chemistry, 21.06.2019 17:30
Which type of stress results when two plates push against one another? a. compression b. tension c. force d. shear
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Chemistry, 21.06.2019 23:00
A100-watt light bulb radiates energy at a rate of 100 j/s. (the watt, a unit of power or energy over time, is defined as 1 j/s.) if all of the light emitted has a wavelength of 525 nm , how many photons are emitted per second?
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Chemistry, 22.06.2019 10:00
Why is the structure of molecule important to its function?
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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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English, 15.04.2020 22:51
English, 15.04.2020 22:51
Mathematics, 15.04.2020 22:51
English, 15.04.2020 22:51
Chemistry, 15.04.2020 22:51
Mathematics, 15.04.2020 22:51
Mathematics, 15.04.2020 22:51
Spanish, 15.04.2020 22:51
Mathematics, 15.04.2020 22:51
Mathematics, 15.04.2020 22:52