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What is the empirical formula of a compound containing C, H, and O if combustion of a 1.75g sample of the compound yields 2.56g of CO2 and 1.05g of H2O?
The reactions occur in acidic solution. (Use the lowest possible coefficients. Omit states-of-matter in your answer.) (a) MnO4- + H2SO3 ? Mn2+ + SO42-
a certain protein was found to contain 0.639% zinc by mass. Determine the minimum molecular mass of the protein.
calculate the volume of 19.4 M sulfuric acid that must be added to water to prepare
mercury has a density of 13.6 g per ml. a barometer holding 9.50ml of mercury has broken. the cost of mercury disposal
If there is the possibilty that the container may rupture if the pressure exceeds 8.0 atm, at what temperature is rupture likely to occur?
The zinc within a copper-plated penny will dissolve in hydrochloric acid if the copper coating is filed down in several spots (so that the hydrochloric acid can get to the zinc). The reaction between the acid and the zinc is
Draw the Lewis Structure for the ClF2+ion and AlF4-. For each ion, what are its electron-pair and molecular geometries? What orbitals on Cl and F overlap to form bonds between these elements
At constant volume, the heat of combustion of a particular compound is -3547.0 kJ/mol. When 1.129 g of this compound (molar mass = 100.35 g/mol) was burned in a bomb calorimeter
Which one of the following is a redox reaction?
Draw an approximante titration curve for the titration of 75 mL of 0.020 M NH3 (pKa of NH4=9.24) with 0.10 M HCl. Label the axes
Rank SCl2, PCl3, and SiCl4 in order of increasing ionic character of their bonds. Use polar arrows to indicate the bond polarity of each bond.
What would be the speed of the following particles if they had the same wavelength as a photon of green light ( = 500.0 nm)? Proton (mass = 1.673 × 10-24 g) Neutron (mass = 1.675 × 10-24 g) Electron (mass = 9.109 × 10-28 g) Alpha particle (mass = ..
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