Made up of groups 1,2 and 13,18

Consider the reaction below. 2H2 + O2 - - - > 2H2O How many moles of water are produced from 13.35 mol of oxygen? 6.675 mol 26.70 mol 53.40 mol 66.75 mol

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Mohr's salt is a pale green crystalline solid which is soluble in water. It is a 'double sulfate' which contains two cations, one of which is Fe2+.

Calculate the solubility (in g/l) of calcium fluoride in water at 25°c if the ksp for caf2 is 1.5 * 10-10.

Na has an atomic mass of 23.0g and O has an atomic mass of 16.0g. How many grams of Na are needed to completely react with 40.0g of O2?

Molar mass of (NaOH)

Why was it necessary to measure the exact volume of distilled water used to dissolve the acid, as well as the exact volume of the solution transferredfrom the beaker to the Erlenmeyer flask?

Do two compounds form a mixture or a pure substance when you put them together mechanically, such as by stirring?

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Does changing the temperature or concentration of the reacting particles affect the rate at which the reaction occurs?