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  1. i.  About four grams, because that's about how much mass was removed from the system.  I am assuming that most of the removed mass was oxygen gas that escaped ii About .5 minutes.  See the time at which the...

    3 Answers · Science & Mathematics · 18/11/2019

  2. Formula ---> (NH4)2S (6.40 mol) (6.022 x 10^23 formula units/mol) = 3.85408 x 10^24 formula units of (NH4)2S There are 8 H atoms per formula unit of (NH4)2S (3.85408 x 10^24) (8) = 3.08 x 10^25 atoms (to...

    1 Answers · Science & Mathematics · 02/07/2020

  3. Doubtful. The first bikinis appeared just after World War II. Early examples were not very different from the women's two pieces common since the 1920s, except that they had a gap below the...

    5 Answers · Arts & Humanities · 12/01/2020

  4. Exact question: https://answers.yahoo.com/question/index?qid=20200522022256AA4g9c5

    3 Answers · Science & Mathematics · 22/05/2020

  5. (100. g H2O2) / (34.015 g H2O2/mol) x (1 mol O2 / 2 mol H2O2) x (0.93) x (31.99886 g O2/mol) = 43.7 g O2

    4 Answers · Science & Mathematics · 07/12/2019

  6. 2 H2O2 → 2 H2O + O2 (30 g H2O2) / (34.01468 g H2O2/mol) x (1 mol O2 / 2 mol H2O) x (22.414 L/mol) = 9.88 L So answer c.

    1 Answers · Science & Mathematics · 08/06/2020

  7. Planck constant, h = 6.626 × 10⁻³⁴ J s Speed of light, c = 3.00 × 10⁸ m/s Rydberg constant, R = 1.097 × 10⁷ m⁻¹ n₂ = ?  to  n₁ = 2 E = hc/λ  and  Rydberg equation: 1/λ = R [(1...

    1 Answers · Science & Mathematics · 21/09/2020

  8. I can find several references to PCl3 reacting with water to form phosphorous acid (H3PO3), but none to it forming H3PO4. The equation for the reaction forming phosphorous acid is: PCl3 + 3 H2O --> H3PO3 + 3...

    2 Answers · Science & Mathematics · 13/09/2020

  9. Assume you have 100g of the substance so that all the percentages become grams  Take the grams of each substance and divide by its molar mass (i.e. 12.01 for carbon) From the results, divide each of them by the smallest answer...

    2 Answers · Science & Mathematics · 10/02/2020

  10. Use a high pressure hose, soap and water with a splash of bleach for that pesky DNA.

    4 Answers · Politics & Government · 02/06/2020

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