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A solution of ammonia and water contains 4.20×10^25 water molecules and 6.90×10^24 ammonia molecules. How many total hydrogen atoms are in this solution?
In a gas mixture, the partial pressures are argon 455 , neon 85 , and nitrogen 135 .What is the total pressure exerted by the gas mixture?
Assume that the kinetic energy of a 1500kg car moving at 95 km/h can be converted entirely into heat. What amount of water could be heated from 20 C to 50 C by the car's energy?
A white colored salt contains a cation from group 4. It has no reaction with concentrated H2SO4 or AgNO3. It produces an insoluble product with acidic BaCL2
Acetylene gas (C2H2) is produced as a result of the reaction CaC2(s)+2H2O(l)-> C2H2(g)+Ca(HO)2(aq) if 13g of CaC2 are consumed in this reaction, how much H2O is needed?
What is the molecular formula of a compound with the empirical formula NO¿ and a molar mass of 138.02 grams per mole?
Calculate the work for a process which one mole of NH3 gas is expanded from 1.0L to 20.0L in an isothermal reversible process at 300K.
A certain pesticide is fatal to fish fingerlings at a level of 0.5 parts per million in water. A leaking metal can containing 10.0 kg of the pesticide was dumped into a stream with a flow of 10.0 Liters per second moving at 0.7 km/hr.
What is the composition in mole fractions of the gas mixture that is expelled? The solubilities of CH4 and C2H6 at 20 degrees celcius and 1 atm are .0175 g/L H20 and .059g/L H2O, respectively.
A rock sample contains traces of 238U, 235U, 232Th, 208Pb, 207Pb, and 206Pb. Careful analysis shows that the ratio of the amount of 238U to 206Pb is 1.164
Calculating Kc, Given the amount of reactant in grams in a container at a temperature and amount produced in moles, calculate Kc:
The density of benzene at 25.0 degrees C is 0.879g/cm3. What is the volume in liters of 2.5 kg benzene?
She records the final temperature of the water as 317K. What is the value of Ccal (calorimeter constant) for the calorimeter.
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