Chemistry, 05.03.2021 18:00 chanel2371
The particles in a table and the particles in the air all have the same movement energy at 25oC. Why is the table a solid and the air a gas?
The particles in the air have more movement energy and are traveling faster
The air has particles that repel each other and the table has particles that attract each other
The particles in the air have stronger forces holding them together
The particles in the table have stronger forces holding them together
Answers: 2
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Select the correct answer from each drop-down menu. daniel and sanya are scientists. daniel is studying whether the increasing frequency of tropical storms is affecting coastal erosion. sanya is investigating whether the discharge from industrial plants has any impact on the ph concentration of freshwater swamps in the surrounding area. which fields of science are daniel’s and sanya’s studies most closely related to? daniel’s field of study is related to science, and sanya’s field of study is related to .
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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, 22.06.2019 12:00
What is the lowest number energy level where a d sublevel is found
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The particles in a table and the particles in the air all have the same movement energy at 25oC. Why...
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