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If an astronaut on the Moon dropped a hammer, would there be sound? Explain. (Follow-up: How do astronauts communicate with each other and with mission control?)
the enthalpy of vaporization of ethanol i 43.5 kj/mole at its normal boiling point of 352 k. using avalue of the molar heat capacity of liquid ethanol of 111.46 j/k/mol
Question- Write the balanced chemical equations for the complete combustion of acetic acid (CH3COOH), the main active ingredient in vinegar. Express your answer as a balanced chemical equation. Identify all of the phases in your answer.
The initial rate of a reaction which is first order in A is 2.0 x 10^-6 M/s when the initial concentration is 0.0050 M. What is the first order rate constant
What would the hydrogen ion concentration be if the pOH was 8. What would the hydroxide ion concentration be if the hydrogen ion concentration was 1 x 10-3 M? What would the pH of a solution that had a hydroxide ion concentration of 1 x 10-5 M be?
calculate the amount of work done against an atmospheric pressure of 1.00 atm when 500.0 g of zinc dissolves in excess
Calculate the percent relative error for the three solutions if perfect technique is used. Report the two new molarities. (The error in a 10-mL transfer pipet is 0.02, and the error in the 200-mL volumetric flask is 0.1)
What is the purpose of Sodium phosphate dibasic when used to make ethanol via fermentation?
Hydrocarbon mixtures are used as fuels. What mass of CO2 gas is produced by the combustion of 197.1 g of a mixture that is 62.5 % CH4 and 37.5% C3H8 by mass
Two compounds have the same empirical formula. One substance is a gas, the other is a viscous liquid. How is it possible for two substances with the same empirical formula to have markedly different properties?
The titration of 25.0mL of an iron (II) solution required 18.0mL of a 0.215M solution of dichromate to reach the equivalence point. Explain what is the molarity of the iron (II) solution
Lithium iodide has a lattice energy of -7.3 times 10^2 kJmol and a heat of hydration of -793 kj/mol. Find the heat of solution for lithium iodide.
What is the mass of the metal pieces alone? What is the change in the volume in the graduated cylinder? What is the volume of the metal pieces? Calculate the density of the metal.
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