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Problem involving math induction! If m and n are distinct real numbers, prove that (m+2)^2 = (n+2)^2 if and only if x+y=-4? The silica content of magma greatly affects its viscosity. Magma with a high silica content has a? 0.8 litres water is how many cups? How many milliliters of concentrated of sulfuric acid (18 M) are required to make 7.0 L of 0.12M H2SO4? 15.00g of Si reacts with 25.00g of F2 to produce 28.67g of SiF4. Which reactant is the limiting reagent?