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An ideal gas is permitted to expand isothermally from two liters at 5.00 atm in two steps;1) against a constant external pressure of3.00 atm, followed by2) against a constant external pressure of 2.00 atm. Calculate q and w. (101.33 J = 1 L atm)
A manufacturer claims that their new candy bar contains fewer than 40 Calories per serving. As a technician in an independent laboratory, you use a bomb calorimeter with a specific heat capacity of 7.35J/gC.
what is the conclusion for determination of percent composition in hydrated compound
A gas is compressed from 68.2 L to 8.0 L at 0.70 atmospheres? In addition a total of 3300 J of heat are gained from warmer surroundings. What is the change in internal energy in kJ
Rank the compounds in each of the following groups in order of decreasing rate of solvolysis in aqueous acetone. C6H11BR, C6H11Cl and C7H13Cl (the last is tertiary, the others are secondary).
the molecular orbital theory provide an explanation for the existence of the covalent molecule Na2 in the gaseous state. How would you predict Na2 by the Lewis theory?
A mixture of gases contains 10.20g of N2 , 1.80g of H2, and 8.15 of NH3 . The total pressure of the mixture is 1.90atm. What is the partial pressure of N2? What is the partial pressure of H2. What is the partial pressure of NH3.
Calculate the heat released when 1.95 L of Cl2(g) with a density of 1.88 g/L reacts with an excess of sodium metal at 25°C and 1 atm to form sodium chloride.
A sample of 5.0mol CO2(g) is originally confined in 15dm^3 at 280 K and undergoes adiabatic expansion against a constant pressure of 78.5 kPa until the volume has increased by a factor of 3.0.Calculate q,w,delta T,delta U,and delta H
Air is approximately 80% nitrogen and 20% oxygen by volume, what is density of air at 273 K and 1 atmosphere? And at a altitude of 2550 ft would density of air be higher or lower, why
What is the pressure in kilopascals in s 38.0L balloon st 22 C filled with hydrogen produced by the reaction of 854.25 g of potassium with water
What is the molecular formula for a substance that contains in 1.00 mole of sample 1.00 mole of S, 24.1 x 10 to the 23rd atoms of F, and 71.0 grams of Cl
The fuel used in many disposable lighters is liquid butane, C4H10.How many carbon atoms are in 2.00 g of buta? Express numerically in atoms
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