Chemistry, 23.01.2022 04:30 katherinemoreno353
Explain how electrostatic attraction affects the van’t Hoff factor. Why is the effect always to lower the van’t Hoff factor from the simple assumption that dissolved ionic substances always form whole number values of ions?
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Chemistry, 21.06.2019 18:00
Temperature and kinetic energy are proportional. a) adirectly b) directly c) indirectly
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Chemistry, 22.06.2019 11:00
3) in peaches, [oh]=3.16x10-11 m a) find [h+ ] b) what is the ph? c) is the solution acidic, basic, or neutral?
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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.)
Answers: 1
Chemistry, 23.06.2019 03:00
Determine type of reaction & predict the product c3h12+o2 =
Answers: 1
Explain how electrostatic attraction affects the van’t Hoff factor. Why is the effect always to lowe...
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