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How many grams of Na2CO3 are present in 29.7 mL of a 31.0% Na2CO3 solution. The density of the solution is 1.09 g/mL.
A gas mixture with a total pressure of 770 contains each of the following gases at the indicated partial pressures: , 265 ; , 134 ; and , 159 . The mixture also contains helium gas. What is the partial pressure of the helium gas?
The electrolysis of molten Al2O3 at 980 ºC is used to produce metallic aluminum. A current of 360 A is used in the electrolysis cell. What is the rate of formation of aluminum, in kilograms per hour?
Draw any one of the skeletal structure of a secondary alkyl bromide with a molecular formula C6H13Br and two stereogenic centers.
A 635 mL sample of unknown solution reacts completely with to form 19.1g CO2 . What was the concentration of the solution?
Calculate tthe freezing point in centigrade units of a soluiton consisting of 685 grams of ethylene glycol dissolved
Oleum or fuming sulfuric acid available commercially in concentrations ranging from 20 to 99.9% sulfur trioxide. Discuss at least three potentially hazardous features associated with concentrated sulfuric acid.
H2 reacts according to the following equation representing the synthesis pf ammonia gas: N2(g) + 3H2(g)--> 2NH3 If 1 Liter of H2 is consumed, what volume of ammonia will be produced at constant temperature and pressure
Compute the band gap for this semiconductor material after Consideing an intrinsic semiconductor with a conductivity σ that triples between the temperature 27 degree Celsius and 57 degree celsius.
Sodium azide (NaN3) is the chemical used in air bags. Sensors detect the initial crash and electrically initiate the explosion of a small charge of this compound
the water for the pan is not saturated with CO2. Will the reported percent CaCO3 in the original sample be too high, too low, or unaffected? Explain
What are the equations for Tin (IV) Chloride reacting with each of these? (ethanol, toluene, NaOH, dilute, HCL and conc HCL)
Starting with only the solid, it is found that at 40 degrees Celsius the total gas pressure is .563 atm. Calculate the partial pressure of NH3 and CO2.
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