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A gas expands from 282 mL to 971 mL at constant temperature. Calculate the work done (in joules) by the gas if it expands against a vacuum.
A gaseous compound containing hydrogen and carbon is decomposed and found to contain 85.63% C and 14.37% H by mass. The mass of 258 mL of the gas, measured at STP, is found to be 0.646 g. What is the molecular formula of the compound?
Following the instruction for the standardization of sodium hydroxide a student took 3.5 gms of KHP (MWt 204.2g/mol) and titrated the solution formed with the given sodium hydroxide solution.
A freshman is currently enjoying the Arts Studio program she is pursuing at a well-known university. In her free time, she likes to skate, take salsa dance lessons, and cook
A researcher is interested in studying the effect of vanadium (V) on egg albumen. He wants to supplement the V to 1 metric ton of his laying hen diet at a concentration of 100 ppm.
Calculate the pH of 0.510 L of a 0.220 M NH_4Cl and 0.220 M NH_3 buffer before and after the addition of the following substances.
the gas with an initial volume of 24.0 l at a pressure of 565 mmhg is compressed until the volume is 16.0 l. what is
The "Zebra" cell was invented in 1985 in South Africa as part of the "ZEolite Battery Research Africa" project, and is used in all-electric municipal buses and other vehicles.
a system at equilibrium or striving to reach equilibrium responds in a way that best ac- commodates or reduces any
Glucose oxidation has a standard enthalpy of -2803 kJ/mol. What is the total heat produced by human respiration over
Hydrogen has an electronegativity value between boron and carbon and identical to phosphorus. With this in mind, rank the following bonds in order of polarity with 1 being the most polar and 5 being the least polar.
Organelles compartmentalize a cell like a department store displays similar items together. What advantage does such compartmentalization offer a large cell and what are two examples of oraganelles and the activities they compartmentalize?
Write an equilibrium expression for each chemical equation involving one or more solid or liquid reac- tants or products.
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