Step-by-Step Chemistry Tutorials for Easy Learning

A 56.7 gram sample of cocl2 6 h2o was heated thoroughly in a porcelain crucible, until its weight remained constant. after heating, how many grams of the anhydrous compound remained?
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Consider an aqueous solution containing 1.0 g/l of a protein (molar mass = g/mol) with a density of 1.0. calculate the freezing-point depression of this solution.
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How to calcular the number of hydrogen atoms in a 100g in a sample of tetraborane b4h10?
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What two weak interactions are most important in the formation of a cluster of lipid molecules in an aqueous solution?
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If an alkane is having 5 carbon atoms then the hydrogen atoms in this alkane will be
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Hydrostatic equilibrium in our Sun is the balance between: gravity and ionization. convection and gravitation. pressure and radiation. gravity and pressure.
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The number and configuration of ______ determines the chemical behavior of an atom.
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The ka for acetic acid (hc2h3o2) is 1.80 x 10-5. determine the ph of a 0.0500mol/l acetic acid solution.
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What is the balanced equation for: potassium manganate vii reacting to produce potassium manganate vi oxide and manganese iv oxide and oxygen.
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In a certain reaction, you start with 3.0 moles of nitrogen and 5.0 moles of hydrogen. How many moles of ammonia will be produced in the reaction
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Is the oxidation of a mineral that contains iron is an example of a mechanical or chemical
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A current is passed through three electrolytic cells connected in series containing solution of silver trioxonitrate (v),copper(ii) tetraoxosulphate(vi) and brine respectively.if 12.7g of copper are deposited in the second electrolytic cell calculate. the mass of silver deposited in the first cell, the volume of chlorine liberated in the third cell at 17c and 800mmhg pressure
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A solution is prepared by dissolving 55.55g of nh4cl into enough water to make 250.0 ml of solution. calculate the molarity.
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