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Question- An ideal gas undergoes an expansion between 400K to 300K. However the path is chaotic, that is, not adiabatic, reversible, isothermal, at constant volume or pressure. Is the work positive, negative, zero, or not enough information and why? Is the heat positive, negative, zero, or not enough information and why? Is the process exothermic, endothermic, negative, zero, or not enough information and why? Does the process result in a change in the disorder that is positive, negative, zero, or not enough information and why?
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A 2 cm string is fastened at both sides is plucked. What is the wavelength of the n = 4 standing wave? How many nodes does it contain?
Question- Table salt, NaCl(s), and sugar, C12H22O11(s), are accidentally mixed. A 3.50-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
A metal sulfide, M2(CO3)3, has a Ksp of 3.30x10^-42. What is the molar solubility of this sulfide in water. Assume the sulfide behaves ideally (ignore hydrolysis effects).
A 460 mL sample of oxygen (O2) was collected by displacement of water at 24 ? C under a total barometric pressure of 1095 torr. What mass of dry oxygen was collected? The vapor pressure of water at 24 ? C is 22 torr
How many grams of the element nickel are contained in 10.0g of a 10.2 wt% solution of nicke sulfate hexahydrate, NiSO4*6H2O?
Calculate the pH of a solution that contains 0.050 M formic acid and 0.10 M sodium formate.
Balance the following redox reaction in basic solution. Which of the following statements is not correct? Cr3+(aq) + ClO3-(aq) + OH-(aq) ? Cl-(aq) + CrO4^2-(aq)
A radioactive sample contains 1.85 g of an isotope with a half life of 3.5 days. What mass of the isotope will remain after 5.8 days. (Assume no excretion of the nuclide from the body) M=?
Organic Chemistry When assigning priority to R (clockwise) and S (counterclockwise) nomenclature of asymmetric carbon atoms, which has a greater priority CH3 or CH2CH3
explain the mechanism of toxicity phase i and phase ii products and metabolites for exposure to naphthalene and vinyl
A 0.4564 g sample of a pure soluble bromide compound is dissolved in water, and all of the bromide ion is precipitated as AgBr by the addition of an excess of silver nitrate. The mass of the resulting AgBr is found to be 0.8815 g.
Alcohols are less volatile than ethers of the same molecular weight, but the two classes of compounds have approximately the same solubility in water because
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