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A common mixture of gases in circuit breakers include 71.4% sulfur Hexafluoride (SF6) and 28.6% nitrogen by mass.
a) What are the sulfur hexafluoride and nitrogen partial pressure of a 20.0 degree Celcius sample if this mixture is delivered at a total pressure of 4.93 atm?
b) Calculate the sulfur hexafluoride partial pressure when a circuit breaker with this gas mixture reaches its rated limit of -40.0 degree celcius.
c) How does the density of the gas in the circuit breaker change as the temperature drops?
A sample of gas occupies a volume of 115mL at a pressure of 720. mmHg. Calculate its volume at STP.
Describe spectroscopic or chemical tests to distinguish between the following pairs of compounds
A benzoic acid solution was prepared by adding 0.488 g benzoicacid to a 100 mL volumetric flask and then adding enough water tobring the total solution volume to 100.00 mL.
Calculate the Gibbs energy of the reaction (delta G rxn) at 25'C for the above rxn when all three gases are at 0.0010 atm. Kp = 1.8 x 10 ^ - 18
Identify the acid and base on the left side of following equations and identify their conjugate species on the right side. (Type your answer using the format (NH4)2CO3 for (NH4)2CO3, [NH4]+ for NH4+, and [Ni(CN)4]2- for Ni(CN)42-.)
How many grams of sulfur (S) are needed to react completely with 355g of mercury (Hg) to form HgS?
After running the reaction for some time, we collect the product and find a total of 3.1 x 10-3moles of COOH groups. What is the molecular weight of the material? Extent of reaction?
The ionic structure of NH4Cl follows the radius-ratio rule. The ionic radii of NH4+ and Cl are 143 pm and 181 pm, respectively. Use the radius-ratio rule to predict the ionic structure. Describe the properties of the unit cell.
Draw a titration curve for both of these peptides. Be sure to label the axes properly, indicate the pKa values, the equivalence points and the buffering regions.
Draw the major and minor resonance structure for the carbonate ion (CO3^-2). Include any formal charges, Indicate which are the major resonance structures and why.
A batch of 5 kg of food product has a moisture content of 150% dry basis. Calculate how much water must be removed from this product to reduce its moisture content to 20% wet basis
sample of gas occupies 10.0-mL at 294.5 K and 1.10 atm. Upon further analysis, the compound is found to be 13.068% C and 86.932% Br. What is the molecular formula of the compound?
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