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How would I write an electron configuration of a stable ion of helium? What are two factors that lower the pH in the thylakoid space? An engineer weighs a sample of mercury (13.6 ✕ 103 kg/m3) and finds that the weight of the sample is 3.6 N. What is the sample's volume? If y = x/(x+a) where a is constant, then is x proportional to y? What is the coefficient of H2SO4 when the following equation is properly balanced with the smallest set of whole numbers?