Questions asked by pinkypink101
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Using this balanced equation in order to produce 7 moles of oxygen gas, how many moles of water would you need to start with? 2H2O -- > 2H2 + O2.
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Balance the following reaction: #"__Fe +___NaBr"##rarr##"____FeBr"_3 + "___Na"#?
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A compound has an empirical formula of CHO2 and a molecular mass of 135 g/mole. Determine the molecular formula?
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In a problem a student is given the amount of solute in grams and the volume of the solution in milliliters. What must be done with the information before the molarity can be calculated?
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Solutions help?
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What volume of 0.25 M solution can be prepared using 0.50 mole of KCl?
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Balance the equation using the smallest whole number coefficient?: C3H8(g)+O2(g)--->CO2+H2O+heat
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If #50.0# milliliters of 3.0 M #"H"_3"PO"_4# completely neutralized #150.0# milliliters of #"Mg"("OH")_2#, what was the molarity of the #"Mg"("OH")_2# solution?
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Chemistry help? :(
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When you heat a hydrated substance what is driven off through the process of evaporation?
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A school knows that 38% of its incoming students own a smart phone and a tablet. What percent of students who own a smart phone also own a tablet if 84% of students own a smart phone?
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Over the span of a month a school tracks student choices at lunch. They find that 56% of alls students buy milk with lunch and 32% buy a piece of fruit. If 22% of all students buy both milk and fruit what percentage of students buy neither?