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Problem- A closed tank contains chlorine gas (Cl_2). The pressure in the tank is 0.0.3 atm and the gas is considered to be immediately dangerous to life or health (IDLH) in concentrations of 10 mg/L or more. Is it safe to go in the tank? Assume temperature in tank is 25°C.
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for the reaction represented by the equation cl2 2kbr reg 2kcl br2 calculate the percentage yield if 200. g of
Hexane has a density of 0.659 g/mL. How many milliliters would a student need to pour in order to get 49.5 g of hexane?
Two radioactive isotopes of iodine used for the diagnosis and treatment of thyroid disease have mass numbers of 123 and 131. For each isotope, give the following information: (a) the number of protons; (b) the number of neutrons; (c) the number of..
Problem- Calculate T, W, and L for a 340 base pairs closed circular plasmid with 3 negative supercoils. Assume the DNA remains entirely B-form
Calculate the molarity (M) of H2SiF6 in a solution prepared by adding 750 mL of 0.7 M H2SiF6 and 250 mL of 0.8 M H2SiF6 .
Rank the subsequent compounds in order of decreasing surface temperature at a given temperature. CH3OH, CH3CH3, H2C=O
Explain why two layers formed when 3 M NaOH was added to the ether solution after the initial separation. What solvents do the two layers represent? Which solvent forms the upper layer? Why?
hydrogen peroxide decays into water and oxygen in a first-order process. please show me the steps to get
Consider a house into which radon is emitted through cracks in the basement. The total volume of the house is 650 m^3 (assume the volume is well mixed throughout). The radon source emits 250 pCi/s
Does the entropy of a system change when: a) a solid melts b) a gas liquefies c) a solid sublimes
What mass of solution contains each of the following amounts of dissolved solute? 1.) 15.0g of sulfuric acid in a 25.0\% solution 2.)11.0g of acetic acid in a 5.00\% solution
According to the valence bond theory, which of the following molecules involves sp2 hybridization of orbitals on the central atom?
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