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Find the value of a&b if (x^2-5x+4) is a factor of the polynomial 2x^3+ax^2+bx-4. Express in factored form.? How many liters of oxygen gas are required to burn 2.97 L of acetylene (C2H2) at STP? If a planet has a day that is 20 hours long and each hour is 40 minutes long, how many hours is that in Earth hours? Do human beings lay egg? What is the volume in L of 9.21 g sample of oxygen gas at 40.7 degree C that exerts 886.7 mmHg of pressure ?