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What are some of the benefits of using a binary eutectic alloy in a physical application (e.g. electronics, plumbing, etc.) rather than using one of the pure metals that constitute the alloy independently? Provide two examples
a gas expands and does p-v work on thesurroundings equal to 287 j. at the same time it absorbs 216 j of heat from the
Using the ?H for the reaction of NaOH + HCl and the reaction of NaOH + NH4Cl How do you calculate an enthalpy change for reaction of HCl + NH3?
Calculate how much acetylene (C2H2) can be produced from 358g of H2O and an excess of CaC2 if the percent yield for this reaction is 94.5%. CaC2+2H2O----->C2H2+Ca(OH)2
A 45.5 g sample of copper at 99.8 degrees celsius is dropped into a beaker containing 152 g of water at 18.5 degrees celsius. What is the final temperature when thermal equilibrium is reached?
Why must all F- solutions be measured and kept in plastic ware rather than glassware. Why do you measure the most dilute solutions first when using ISE. Why do we not use TISAB when determining the selectivity coefficient.
Predict the rate of change in the concentration of N2O over this time interval. In other words, what is dt [N2O]/ dt?
calculate the molality of each of the following solutions.a 15.9 g of sucrose c12h22o11 in 690. g of waterb 7.38 moles
Determine the equivalent acid-base equilibrium that results when each of the following pairs of solutions is mixed. 25.0 mL of 0.50 M NaOH + 12.0 mL of 1.50 M HCl Pick two initial conditions from first four choices. Pick one choice from remaining ..
The decomposition XY is second order in XY and has a rate of 7.02 E-3 M-1. s-1 at a certain temperature. A. What is the half-life for this reaction at an initial concentration of 0.100M
Arrange the subsequent ionic compounds in order of reducing amount of energy released in lattice formation: NaF, CaO, InN, and RbBr.
A substance is found to consist of 1.900g of silver, 0.250g of nitrogen, and 0.850g of oxygen. What is the percent by mass of oxygen in the compound
A student measures out 100.0 ml of 1.00 M HCl and places it in a styrofoam cup. The temperature of the HCl is 22.30C. She then addes 1.002 g of MgO to the cup.
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