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A sample of c3h8 has 6.56 x 10^24 H atoms. How many carbon atoms does the sample contain? what is the total mass of the sample?
Compute the change in temperature when 2 g of sodium chloride is dissolved in 270.0 mL of water initially at 25 C. The heat capacity of water is 4.184 J/mL/K. Neglect the heat capacity of the NaCl.
find the probability of finding an electron in a 10 nm one dimensional box between 0.1 nm and 0.2 nm.
Instant cold packs used to treat athletic injuries contain solid NH4NO3 and a pouch of water. When the pack is squeezed, the pouch breaks and the solid dissolves
How many grams of aqueous iron bromide will be needed to react with an excess of potassium phosphate,K3PO4,to produce 17.1 g of solid iron phosphate?
What alkene (including cis and trans isomers) would be produced by the dehydration of the following alcohols? Where possible, predict the relative amounts of each product according to Zaitsev's rule.
The first ionization energy of bismuth is Ei1=+703 KJ/mole. What is the longest possible wavelenghth of light that could ionize an atom of bismuth?
A gaseous compound containing hydrogen and carbon is decomposed and found to contain 85.63% C and 14.37% H by mass. The mass of 258 mL of the gas, measured at STP, is found to be 0.646 g. What is the molecular formula of the compound?
Calculate the pH of the solution made by adding 0.50 mol of HOBr and 0.30 mol of KOBr to 1.00 L of water.
What is the pressure inside a system when the system-side column in an open mercury manometer is 75.0 mm lower than the atmosphere side when the atmospheric pressure is 735 mm Hg?
a solution is prepared by adding 50.0ml of 0.050m HBr to 150.0ml of 0.10m HI .calculate the concentrations of all species in this solution HBr and HI are both considered strong aicds ?
If a 0.140 mM solution of MnO41- has an absorbance of 0.210 at 525 nm in a 1.000 cm cell. What is the concentration of a MnO41- solution that has absorbance of 0.620 in the same cell at that wavelength
Determine the percent yield for this reaction as N2(g) + 3 H2(g) ? 2 NH3(g)
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