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Determine the number of moles of aluminum will react with 0.80grams O2 in the reaction of aluminum oxygen and metal gas to make aluminum oxide,
A container which is having 22.4dm^3,temperature is 0'C and one mole of Nitrogen and 2 moles of hydrogen. Determine the molar fraction, partial pressure and the total pressure?
Calculate the dimensions of the cube when a perfect cube of aluminum metal was found to weigh 20.00g and the Density of aluminum is 2.70 g mL -1. .
Boron has two naturally occurring isotopes, 11B (80.1%) and 10B (19.9%). Although the B2 molecule does not exist naturally on Earth, it has been formed in the laboratory and observed in stars.
Radiation of shorter wave lengths and the ultraviolet radiation can damage the biological molecules because they carry the enough energy to break bonds within molecules. A carbon-carbon bond needs 3
A mixture known to contain NaBr and AlBr3 was analyzed by the reaction with AgNO3 to precipitate all of the bromide ion as AgBr(s). Calculate the weight percent of AlBr3 in the mixture if a
Calculate the percent composition by mass of carbon in lithium carbonate (Li2CO3)? Calculate the empirical formula of a compound which is 82.64 % C by mass and 17.36 % H.
Calculate the concentration of the prorogated (acidic) form of buffer MOPS (pK=7.15) when .5 moles are dissolved and adjusted to apH of 6.15 with 5M HCL to a final volume of 1 L?
A natural gas analyzes N2, 20.0 percent and CH4, 80.0 percent. It is burned under a boiler and most of the CO2 is scrubbed out of the flue gas for the construction of the dry ice.
Suppose you would like to make a buffer that is having the pH of 3.50 and you can start with 100 mL of a 0.1000 M solution of disodium maleate and you will bubble also the HCl gas with the help of t
Determine the % empty space in a face-centered-cubic (FCC) lattice, and show that it does not depend on the edge length of the unit cell or on the size of the atoms in the unit cell.
Calculate the standard deviation and the mean for this dataset? Make a report on the corrected standard deviation and the mean.
Calculate the concentration in molarity if a solution is made by combining the 0.224 g glucose (C6H12O6) with enough water to make a final volume of the 250.0 mL.
What volume of the stock solution should be diluted to 25.0 mL to acquire the desired solution? From a stock solution of 0.100 M LiNO3 (aq), 25.0 mL of 0.0100 M LiNO3 (aq) is to be
Calculate the freezing point of a solution that which contains 78.8 g of naphthalene dissolved in the 722 mL of benzene where d = 0.877 g/mL. Pure benzene has a melting point of 5.50°C and a fr
Determine the numbers of moles of ammonium ions are in8.746 g of ammonium carbonate? At 60.0 C determine the amount of heat that must be absorbed by 10.0 g of ice at -20.0 C to convert it to li
Find out the amount of heat required to melt 2.00 Kg of iron at the melting point (1,809K), when the H fusion = 13.80 kJ/mol.
At a pressure of 1.0 atm and the temperature of 25 degrees Celsius a saturated solution was formed when 4.54*10^-2 L of argon was dissolved in the 1.0 L of water. Evaluate the Henry's law constant
Calculate the percent empirical formula and composition if the black residue obtained at 1000 deg C is an oxide of copper.
Determine the number of grams of the hydrate must the student weigh outing order to get the desired amount of the anhydrous compound?
A sample which is having 003 g of naphthalene, a compound having only the hydrogen and carbon, was burned in excess oxygen to give .0103 g of Co2.
Does a photon with frequency1.00 x1015s-1 have enough energy to break this bond? Because the minimum energy required breaking an oxygen-oxygen bond in ozone is 387 kJ mol-1. Support your answer
Why the proton diffraction an interesting technique for the investigation of molecular structure? To what speed must a proton be accelerated for it to have a wavelength of 100pm? Explain what accel
Make the three resonance structures for the aryliumintermediate that occurs in the formation of 1-nitronaphthalene and2-nitronaphthalene.
Calculate the formula of unknown hydrocarbon. If a hydrocarbon mixture has 60.0 % by mass of C3H8 and 40.0 % of CxHy. When 10.0g of this mixture is subject to combustion analysis, 29.0g CO2