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The atomic weight of a newly discovered el-ement is 10.600 amu. It has two naturally occuring isotopes. One has a mass of 10.000 gms and a natural abundance of 70.000%. What is the isotopic mass of the other isotope?
how many grams of sucrose C12H22O11 must be added to 522g of water to give a solution a vapor pressure 2.0mmHg less than that of pure water at 20 degrees celsius
A bottle containing 345 g of cleaning solution is used for carpets. If the cleaning solution has a specific gravity of 0.850, what volume of solution was used?
where all compounds are assumed as covalent then determine which reaction must be endothermic and also explain your answer briefly?
What are bonding theories? Why are they important? What may they be used for. HI has a force contents of 314 Nm^-1 and a bond length of 160.92 pm.
A 250.0 mL aliquot of 2.50 M H2SO4 solution is mixed with a 250.0 mL aliquot of 4.00 M HNO3 solution. What is the molarity of hydrogen ions in the combined solution.
Compute the enthalpy change for this reaction per mole of this substance and dissolves via the reaction and the temperature of the solution rises to twenty eight degree celsius.
A 32.0-g sample of water at 260. K is mixed with 47.0 g water at 300. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
calculate that how many liters of carbon monoxide gas, measured under the same conditions, is essential?
Dalton law of partial pressure - The partial pressure of oxygen is maintained at 0.20 atm at this depth
What volume of 0.300 M CaCl2 is needed to prepare 240. mL of a solution which is 0.100 M in chloride ion.
Why is the peroxide anion such a strong oxidizing agent and describe qualitatively how the conclusions of Bohr and Rydberg are essentially the same?
2 NH3 + CH3OH → products . How much NH3 is needed to react exactly with 21 grams of CH3OH
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