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what is the change in enthalpy at 25 C and 1 atm for the reaction of 5.00 mol of elemental iron with excess oxygen gas?
what is the enthalpy change per mole of ethanole burned. the spacefic heat capacityof H2O is 4.184J/gC
A solution of calcium ions contains 5 meq/650. cm3 of calcium ion. How many moles of calcium ion does this solution contain?
How many moles of O2 are needed to consume 0.52 mol of Mg in the following unbalanced reaction? Mg plus O2 -> MgO
Extracting aluminium uses a current of 25000 ampere.What is the time taken to produce 10kg of aluminium from Al2O3(liquid
If the caffeine concentration in a particular brand of soda is 3.35 mg/oz, drinking how many cans of soda would be lethal?
a 70g piece of ice at 0c is added to a sample of water at 6c, all of the ice melts and the temp of the water decreases to 0c, how many grams of water were in the sample?
A sample of 0.50 moles of O2 gas initially at 250K and a pressure of 1.0 atm is compressed to final pressure of 12 atm. The compression can occur via two different paths
Ammonia can be oxidized in oxygen as shown: 4 NH3(g) + 3 O2(g) 2 N2(g) + 6 H2O(g). When 0.791 mol of NH3 and 0.814 mol of O2 are placed in a 1.00 L container at a certain temperature,
A graduated cylinder contain s 23.0 mL water. what is the new water level after 35.6 g of silver metal is submerged in the water?
How many grams of sodium formate, NaCHO2, must be added to 750.0mL of .250 M of formic acid, HCHO2, to obtain a buffer with pH of 5.5 ?
We had to do an experiment that depolymerized PET into terephthalic acid and ethylene glycol using 1-pentanol and KOH. One of the post-lab questions is as follows:
The atmospheric pressure in La Grande (683 atmospheric pressure) is significantly lower than that of Portland
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