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A 47.42 g sample of a substance is initially at 20.8 degrees C. After absorbing 1861 M of heat, the temperature of the substance is 189.2 degrees C. What is the specific heat (c) of the substance?
Calculate the number of kilograms of helium needed to inflate a balloon to a volume of 100,000 L at an atmospheric pressure of 250 mmHg and a temperature of -35 °C.
Use the ksp values to calculate the molar solubility of each of the following compounds in pure water BaSO4(ksp=1.07x10^-10) PbCl2(ksp=1.17x10^-5) Ni(0H)2(ksp)5.48x10^-16
The normal boiling and freezing points of substance X are 87.3 K and 84.0 K respectively. The triple point is at 82.7 K and 0.68 atmosphere. a. Draw a phase diagram for substance X. Label the regions in which the s,l, and g phases are stable.
A 1 gram sample of calcium was burned in chlorine to give a 1.95 g sample of pure CaCl2. the energy given off in this reaction was 30.3 kJ. given this information, find the heat of formation of 1 mol of CaCl2
Explain your reasoning, including specific references to chemical characteristics of these molecules. Be sure to consider whether transit would be controlled or uncontrolled.
The [OH-] of a solution can be determined from the pOH using the equation: [OH-] = 10 ^ -pOH where [OH-] = hydroxide ion concentration. If [OH-] = 6.0*10^-3 M then pOH=?
An FM radio station broadcasts electromagnetic radiation at a frequency of 95.7*10^6 Hz. Calculate the wavelength of this radiation
Calculate the heat capacity of a calorimeter if the combustion of 5.000 g of benzoic acid led to a temperature increase of 24.153 degrees Celsius. The heat of combustion of benzoic acid is 26.38 kJ/g.
explain why there is a difference in spectrophotometric response during titration before and after the equivalence point by placing the statements below into the appropriate categories.Now, calculate the concentration of apotransferrin present in ..
Consider the neutralization reaction that takes place when hydrochloric acid reacts with aqueous sodium hydroxide.
What are the average calories (not Calories) per gram for each of your food items?
For a hypothetical gas-phase reaction that is second order in A and third order in B, by what factor does the rate change if pA is decreased by 4 times and pB is doubled
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