- What is the balanced equation of: Ca(s) + H2O(l)-> Ca(OH)2(aq) + H2(g)?

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Find the focus, directrix, and focal diameter of the parabola.
x2 = 5y
focus (x, y) = directrix = focal diameter =? Can i tan during winter? Solve 5x to the power of 2 + 14x -24 = 0? Orbit, radius mass? What is general formula for finding sizes a, b and c of scalene triangle ABC knowing exradii r-a, r-b. r-c of escribed circles?