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Chemistry, 23.09.2020 17:01 deandrehudson18
A child has a small rubber ball that is filled with water and glitter. When the ball is bounced the glitter spreads around the inside of the toy then settles back at the bottom. The mixture inside the toy would be considered which of the following?
Homogeneous
Solution
Heterogeneous
Colloid
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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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A child has a small rubber ball that is filled with water and glitter. When the ball is bounced the...
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