Answers: 1
Chemistry, 22.06.2019 06:30
If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution
Answers: 1
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 22:00
All of the following are homogeneous mixtures except a) sugar dissolved in water. b) orange juice. c) coffee with cream. d) household vinegar. e) apple juice
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Chemistry, 23.06.2019 00:50
50 points! need answer asap. what type of organic compound contains the following functional group? (2 points)
Answers: 3
What is the wavelength, in nm, of radiation with an energy of 2.668 x 10^(-19)j...
History, 26.08.2019 11:30
English, 26.08.2019 11:30
Mathematics, 26.08.2019 11:30
English, 26.08.2019 11:30
English, 26.08.2019 11:30
Mathematics, 26.08.2019 11:30
Mathematics, 26.08.2019 11:30
Mathematics, 26.08.2019 11:30
Mathematics, 26.08.2019 11:30
Mathematics, 26.08.2019 11:30