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statuscvo [17]
3 years ago
9

The density of gold is 19.3 g/cm? What volume would 109 g of gold have? ОА. . 56.48 cm3

Chemistry
1 answer:
dsp733 years ago
3 0

Answer:

5.647 cm^3

Explanation:

density=mass/volume

volume=mass/density

volume=109/19.3

volume=5.647.. cm^3

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State the mechanisms of alkene reaction
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Answer:

Reactions of Alkenes - Pearson

Explanation:

most Alkenes reaction fall into this large class of electrophilic additions to alkenes.

the pi bond as a nucleophile. A strong electrophile attracts out the electrons out of the pi bond to form a new sigma bond. generating a carbocation

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Which of the following best describes how an electron moves when it absorbs or releases exact amounts of energy?
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B.The electron moves between orbital levels.
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Why would a scientist method of data collection change based on where they conduct their experiment?
serious [3.7K]

Answer: scientists use the scientific method to collect measurable, empirical evidence in an experiment related to a hypothesis.

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3 years ago
A 0.652-g sample of a pure strontium halide reacts with excess sulfuric acid. the solid strontium sulfate formed is separated, d
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The formula of the original halide is SrCl₂.

Explanation:

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SrX₂ + H₂SO₄ → SrSO₄ + 2 HX, where X is the halide.

  • From the equation stichiometry, 1.0 mole of strontium halide will result in 1.0 mole of SrSO₄.
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  • The number of moles of SrX are  4.11 x 10⁻³ moles from the stichiometry of the balanced equation.
  • n = mass / molar mass, n =  4.11 x 10⁻³ moles and mass = 0.652 g.
  • The molar mass of SrX₂ = mass / n = (0.652) / (4.11 x 10⁻³ moles) = 158.62 g/mole.
  • The molar mass of SrX₂ (158.62 g/mole) = Atomic mass of Sr (87.62 g/mole) + (2 x Atomic mass of halide X).
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  • <em>So, the formula of the original halide is SrCl₂</em>.
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Do you think this is an ethical decision
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