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Consider the following reaction:
2CO(g)+O2(g)→2CO2(g). a reaction mixture contains 28 g of CO and 32 g of O2, what is the limiting reactant? (Try to do this problem in your head without any written calculations.)
in new york you had a balloon inflated with helium he and you measured its temperature which was 89.6 degree f and its
If only 10ml of 3.0 M KOH were used in the alum preparation instead of the specified 25 ml,would KOH then become the limiting reactant? Write the chemical equation for the conversion of Al(s) to solid aluminum alum KAL(SO4)2*12H2O (S)
Seawater contains 0.13% magnesium by mass, and has a density of 1.025g/ml. What fraction of the magnesium can be removed by adding a stoichiometric quantity of CaO (that is, one mole of CaO for each mole of Mg2+)
A solution of ethanol (C2H5OH) in water is prepared by dissolving 69.8 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution. What is the molarity of the ethanol in this solution?
Calculate the mass in grams for a sample of Al that absorbs 1.70kJ when the temperature increases from 56 degree Celsius to 177 degree Celsius?
Gold sells for $1120/oz. One ounce is equal to 28.35g. The molar mass of gold is 196.97g/mol. 1 moldovian franc contains 0.567g of gold. If 1 franc = $1.42, how many atoms of gold are presents in 0.010 moldovian francs?
Problem- A sample of I-131 has activity of 30 mCi. Its half-life is 8.08 days. Calculate activity at end of 20 days.
Define Chromium metal is plated onto a car bumper at a current of 10.0 amperes for 100 seconds and the plating bath contains chromium in the form of CrO42- ions. Explain how many grams of Cr are deposited in this process. (The atomic weight of Cr ..
After a dose, the concentration of medication in the blood declines due to metabolic processes. The half-life of a medication is the time required after an initial dosage for the concentration to be reduced by one-half. A common model for this pro..
Assume 1.00 mL = 1.00 g What numerical value will be used for the moles on the right hand side of the equation above?
Determine the amount of sodium that has been actually added, in grams. State the chemical formula of salt and classify the bond as ionic, polar covalent, or non-polar covalent
an unknown carbohydrate compound has the empirical formula ch2o. a solution consisting of 0.515 g of the carbohydrate
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