1/1/2023 0 Comments Mole calculation worksheet![]() ![]() The molarity when 54.8 grams of lithium sulfate are dissolved to make 250 mL of solution.Expert Level (hint you must use both equations).The number of moles of 99.4 grams of NaCl.The mass of 11 mol of hydrogen chloride.The number of moles of 54.9 grams in K 2.The volume of 1.7 moles of sucrose made into a 3.4mol/l solution.The molarity if 3.2 moles of CaCl 2 are dissolved to make 1000 ml of solution?.The number of moles of Na 2 CO3 in 0.750L of solution if the concentration is a 0.640mol/L?.The molarity of a solution where 1.1 moles of silver nitrate are dissolved to make 0.250L of solution.The molarity of a solution where 1.9 moles of iron (II) chloride are dissolved to make 1750 mL of solution.The remain two terms are those you must use in your equation on the other side of the = sign, working from the top down and/or left to right, and include all multiplication/division signs linking the two remaining terms.Cover the term you wish to calculate with your forefinger.Write down the term you wish to calculate (e.g.The three equations derived from this triangle are:Ĭ = n / V n = C x V V = n/C How to use a formula triangle: The vertical line means that you must multiply.The horizontal line means that you must divide.All you need to do is remember how to draw the triangle, what letters go where, what they mean, and how to use the triangle. Manipulate the above formulas to solve Chemistry problemsįormula triangles are handy those of us who really struggle with algebra and manipulating terms.Use the formula concentration = number of moles/volume.Use the formula number of moles = mass/molar mass.The mole can be used to help you to work out other information about a substance, such as its concentration or its mass. Regardless of the element in question, one mole of atoms contains 6 x 10 23 atoms. It is a convenient way of counting atoms and allows chemists to make predictions about the masses of different substances that are involved in reactions. In Chemistry, the measure the amount of a substance in a unit is called a ‘mole’. Chemistry Magic Triangles Background Theory: ![]()
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