QUESTION 9
10 p
Calculate the density of an unknown metal with a mass of 8.129 grams and a vo...
Chemistry, 14.10.2020 14:01 lamashermosa23
QUESTION 9
10 p
Calculate the density of an unknown metal with a mass of 8.129 grams and a volume of 1.72 milliliters. Express your answer in the correct number of
significant digits in Sl units.
Answers: 2
Chemistry, 21.06.2019 13:00, shahedalahmad2017
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Answers: 3
Chemistry, 22.06.2019 14:30, Dreynolds1667
100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)
Answers: 1
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The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.
Answers: 1
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