Reacting_quantities_and_equations_(NXPowerLite) Opp

# Reacting_quantities_and_equations_(NXPowerLite) Opp - 100s...

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Reacting quantities and chemical equations 100’s of free ppt’s from www.pptpoint.com library

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2Mg (s) + O 2(g) = 2MgO (s) This equation says that 2 moles of solid magnesium reacts with 1 mole of oxygen gas to produce 2 moles of solid magnesium oxide No wonder we use short hand and write an equation! Notice equations give the mole ratio of reactants and products

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We need to know how much to add to produce a given quantity of product
Let us now consider chemical equations You already know stacks about Chemical equations THEY HAVE TO BE BALANCED There are the same number of Atoms on each side You cannot invent new chemicals to make your equation balance Things like hydrogen and the Halogens are diatomic. Good chemists usually Add state symbols like (g) or (aq) We rarely put 1 in, it is assumed

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If you were baking cookies you would want to know the proportions of ingredients to add!! So let’s start with 5.0g of Mg
2Mg (s) + O 2(g) = 2MgO (s) 5.0/24 5.0/24 moles moles Ratio 2:2 = ratio 1:1 Step 1 turn the 5.0g of Mg into moles of Mg

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Reacting_quantities_and_equations_(NXPowerLite) Opp - 100s...

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