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A sample of 1 mol perfect gas molecules with Cp,m equal to 7R is put through the following cycle (a) constant-volume heating to twice its final pressure, (b) reversible adiabatic expansion backs to its initial temperature, (c) reversible isothermal compression back to 1.00 dm.Calculate the q,w, delta U and delta H for each step and overall.
identify the spectator ion s in the following equationhclaq li2co3aq rarr lihco3aq
In its crystalline form, hemoglobin has a spherical shape with a radius of 2.75 nm. In aqueous solution, the hydrated radius of hemoglobin is found to be 3.55 nm. How many water molecules hydrate a hemoglobin molecule
terephthalic acid is an organic compound used in the formation of polyesters. it contains 57.8 percent c 3.64 percent h
what concentration of monobasic and dibasic sodium phosphate should be used to get pH 7.4
State whether each of the following experimental errors would raise or lower the mass of the recovered product:
A 53.6 gram sample of an unknown substance contains 11.5 grams of carbon. What is the percent by mass of carbon in the compound?
Calculate the amount of heat required to raise the temperature of 1500g of water from 25C to 63C
Calculate the volume in liters of 88.2 lb of CCl4 (density = 0.00160 kg/cm3; 1 lb = 454 g). A. 64.0 L B. 40.0 L C. 28.0 L D. 25.0 L
Write the chain propagation steps for the formation of dichloromethane in the chlorination of methane
Table salt, NaCl(S), and sugar, C12H22O11 (s), are accidentally mixed. A 4.50-g sample is burned and 2.90 g of CO2 (g) is produced. What was the mass percentage of the table salt in the mixture
Using electronegativity arguments, classify the following diatomic molecules as nonpolar (N), polar (P), or ionic (I). (Use the drop down menus to choose your answers
Why might this fire rekindle days later as someone tries to remove the residue with water? What chemical process is involved here?
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