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When 15 mL of a solution containing 1.2 M Na2S is diluted to 30mL, a dilute solution is formed. How many moles of Na+ ions are contained in 20 mL of the dilute solution
An unknown metal is found to have a density of 19.300g/cm^3 and to crystallize in a body-centered cubic lattice. The edge of the unit cell is found to be 0.28864nm. Calculate the atomic mass of the metal
What is the empirical formula of a compound which contains only colbalt and oxygen. if an 8.29 grams sample of the compound contains
The compound trichlorosilane (SiCl3H) has a vapor pressure of 0.258 atm at -2 degrees celsius. What is the normal boiling point ( the molar heat of vaporization of Trichlorosilane is 28.8 kj/mol)
Using Gas Chromatography results and mass of your product mixture, calculate the percent yields of both 1-Hexanol and 2-Hexanol.
A radio station's channel, such as 100.7 FM or 92.3 FM, is actually its frequency in megahertz (MHz), where 1MHz=10^6 Hz. Calculate the broadcast wavelength of the radio station 99.10 FM.
Calculate the work (in kJ) when 3.00 moles of hydrogen gas are produced from the reaction of sodium in excess water at 298 K:
Assuming the same mass of each, which of the following substances will have the highest temperature change if they all absorb the same amount of heat Gold
Calculate the number of moles of quicklime, CaO, that would be produced by the decomposition of 30.0 moles of limestone, CaCO3, in the following reaction.
Find reactant and product information, Balance the following reaction: Mn + HCl --> MnCl2 + H2, If you have 100g of Mn and 100g of HCl find
what mass of calcium carbonate is required to react with 137.8 mL of a 0.6943 M sulfuric acid solution?
the LDH molecule always contains 4 polypeptide subunits and each subunit can be either a H (heart) or a M (muscle) subunit. how many isozymes are possible
Calculate the rate of Fe2 O3 production (kg/min) in the outlet solid stream, and the total molar flow and composition of the outlet gas stream.
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