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To test the effectiveness of a gunpowder mixture, 1 gram was exploded under controlled STP conditions and the reaction chamber was found to expand to 310 cm3. What volume would these gases occupy at the temperature produced by an uncontrolled explosion (2,200.°C) and 2.1 atmospheres of pressure?
Synthetic rubber is prepared from butadiene, C4H6. About how many monomers are needed to make a polymer with a molar mass of 108000 g/mol
A graduated cylinder contains 148 of water. A 17.0 piece of iron (density = 7.86 ) and a 19.0 piece of lead are added. What is the new water level in the cylinder?
What is the molarity of a solution prepared by dissolving 4.92 g of calcium nitrate, Ca(NO3)2, in 250 mL of water? (The molar mass of Ca(NO3)2 is 164 g/mol.)
14 g of Si reacts with 16 g of O to produce SiO2, the only product, with no reactant left over. How much SiO2 would be produced from 34 g of Si and excess O?
What experimental difficulty would you encounter if you had neglected to include a drying step before evaporation
The titration requires 34.11 mL of base to neutralize 15.00 mL of the acid. What is the Molarity if acid in the vinegar?
CaCO3(s)+2HCl(aq) -> CaCl2(aq) +H2O(l) +CO2(g) How many grams of calcium chloride will be produced when 27.0 g of calcium carbonate are combined with 12.0 g of hydrochloric acid. Which reactant is in excess and how many grams of this reactant will..
An experiment produces 15.0 grams of hydrogen for every 71.0 grams of oxygen used. How many grams of oxygen will you need to produce 6.0 g of hydrogen
what experimental variables must be controlled to assure reproducible absorbance data
Calculate the of a solution prepared by mixing equal volumes of 0.21 methylamine (CH3NH2, Kb = 3.7 x 10^-4 ) and 0.61 M CH3NH3Cl.
what volume and mass of steam at 100c and 1.00 atm would release the same amount of energy during condensation as 100.cm3
What base is routinely used to clean up an acid spill. Why is it necessary to immediately clean the test tube which contains the silver mirror formed during the Tollen's Test
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