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The balanced equation for the combustion of ethanol is
2C2H5OH(g) + 7O2(g) ® 4CO2(g) + 6H2O(g)
How many grams of dioxygen are required to burn 5.9 g of C2H5OH?
List the chemical names and number of atoms for each chemical for each of the following equations.
How many grams of sodium hydroxide are needed to react completely with 50.1 mL of 0.145 MCoCl2 solution?
Draw out the Lewis structures for H2CO3, HCO3-, and CO32-. Then determine the maximum number of equivalent resonance structures for each species. Note that carbon is the central atom in all three cases.
during photosynthesis an electron is believed to travel 25 angstroms within one picoseconds. the uncertainty in time
Find the pH at the equivalence point(s) and the volume (mL) of 0.125M HCL needed to reach the point(s) in titrations
1 give the names and chemical formulas for five bases of your choice.2 write a chemical equation that shows the release
how many days does it take for 16g of palladium-103 to decay to 1.0g? the half life of palladium -103 is 17days
Recall "living" carbon samples show 15.3 d/min*g (carbon). note: CaCO3 is 12.00% carbon, and 14C has a half-life of 5730yr.
Determination of Molecular SO2 Needed for Protecting Wine, You have just finished fermenting a wine and the pH = 3.7. You need 2mg/L "molecular" SO2 to protect the wine. What level of free SO2 do you have to add to achieve the level of the molecul..
1.925 g of methanol is burned in a bond calorimeter with a heat capacity of 10.4 kj/c .how much heat is given off in kj/g if the temperature increase 4.19 c
What mass of sucrose should be combined with 453 of water to make a solution with an osmotic pressure of 8.00 at 320 ? (Assume the density of the solution to be equal to the density of the solvent.)
A buffer is to be prepared by adding solid sodium acetate to 0.10 M CH3COOH. Which of the following concentrations of sodium acetate will produce the most effective buffer
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