- If the atmospheric pressure for today is 31 in Hg. What is this measurement in mm H2O?

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Solve for z? 152 (3/4) ^z/22 = 19? If we select 5 objects from a set of 11 distinct objects, then the number of possible samples is???? (STATS QUESTION)? A compounds empirical formula is C2H5. If the formula mass is 58 amu, what is the molecular formula? Solve for x. (sqrt root)x- (sqrt root)x-5=1? In the reaction 2Al2O3 → 4Al + 3O2, what is the mole ratio of aluminum to oxygen?

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