Find the volume of the gas sample if temperature increases
A gas sample has an original volume of 700 ml when collected at 750 mm and 25°C. What will be the volume of the gas sample if the pressure increases to 810 mm and the temperature increases to 30°C?
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When 2.45 g of an unknown weak acid HA with a molar mass of 85.0g /mol is dissolved in 250.0g of water, the freezing point of the resulting solution is -0.256 C. Find Ka of unknown weak acid.
The mass of an average blueberry is 0.78 g and the mass of an automobile is 2100 kg. Find the number of automobiles whose total mass is the same as 1.0 mol blueberries. Express your answer using two significant figures.
Surface molecules have fewer molecules to interact with than the inner molecules. Values depend on size and intermolecular force strength.
Capsaicin, the compound that gives the hot taste to chili peppers, has the formula C18H27NO3.
Propane is often used for gas grills and is typically purchased by filling a propane tank with 20 pounds of propane. What is the enthalpy change when 18 pound of propane is burned? Use the conversion 1 lb = 454 g and express your answer in scienti
A 1.20 gram sample of dry ice is added to a 755mL flask containing nitrogen gas at a temperature of 25.0 degrees Celsius and a pressure of 725 mmHg.
If the reaction reaches 90.0% of completion (90.0% of the limiting reactant is consumed), what are the partial pressures of each of the reactants in the flask at 275 ?
Water's relatively high specific heat (4.184 J/g°C) makes it an ideal coolant for automobile engines. How much heat from an engine would be absorbed if 13.9 kg of cooling system water were heated from 25°C to 75°C?
An unknown salt is either NaCn, NaC2H3O2, NaF, NaCl, or NaOCl. When .100 mol of the salt is dissolved in 1.0 L of solutionk, the pH of the solution is 8.07. What is the identity of the salt?
In a reaction 8200 g of sodium reacts with 74.00 g of ferric oxide to form sodium oxide and iron metal. Calculate the mass of sodium iron produced.
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Which of the following correctly gives the steady-state diffusion current density at x = 5 um into the sample if the minority carrier diffusion length is 7.5 um
Write a critique essay draft using the format: introduction, summary, critical response. Article: Canadian universities must stop undervaluing female academics