Chemistry, 05.07.2019 23:30 elizavlsc4
What can effect the properties of a substance a. only the types of atoms b. only the arrangement of atoms c. the arrangement and type of atoms d. neither the arrangement nor the type of atoms
Answers: 2
Chemistry, 22.06.2019 05:30
Liv sheldon given the balanced equation for an organic reaction: c2h2 + 2cl2 โ c2h2cl4 this reaction is best classified as *
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Chemistry, 22.06.2019 09:40
How many grams of aluminum will there be in 98g of al2o3?
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Chemistry, 22.06.2019 10:00
According to the tide table below what time of day will the highest tide occur? (2 pt) the highest tide will occur at
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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) โ h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 ยฐc. 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
What can effect the properties of a substance a. only the types of atoms b. only the arrangement of...
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