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Chemistry, 04.10.2019 23:00 kamgurunlian
Which statement best describes an electron
1) it has a smaller mass than a proton and a negative charge
2) it has a smaller mass than a proton and a positive charge
3) it has a greater mass than a proton and a negative charge
4) it has a greater mass than a proton and a positive charge
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Chemistry, 22.06.2019 07:20, rscvsdfsrysas1857
The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.
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Chemistry, 22.06.2019 11:40, Wemaybewrong
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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Which statement best describes an electron
1) it has a smaller mass than a proton and a negati...
1) it has a smaller mass than a proton and a negati...
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