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Question 1:
A sample of gas at 310 Kelvin and 1.2 atmospheres has a density of 2.78 g/L, what is the molar mass of this gas? Show all of the work used to solve this problem.
The pressure of 6.0 L of an ideal gas in a flexible container is decreased to one-sixth of its original pressure, and its absolute temperature is decreased to one-forth of the original. What is the final volume of the gas
If strong oxidizer spill occurs in the vicinity of barrels of flammable chemicals, with one of the barrels of flammable chemicals possible leaking as well, should water be used on the incident or how should mitigation proceed?
calculate the molecular weight of an unknown substance if 0.2064 g of solid was added to 25.00 ml of cyclohexane and
A mixture of sodium carbonate and sodium hydrogen carbonate is treated with aqueous hydrochloric acid. the unbalanced equations for the resulings reactions are
Calculate the Energy of dissolving in kilojoules/mole if 2.56 grams of CaBr2, calcium bromide, are dissolved in 50 mL of water in a calorimetric cup with a temperature rise of 4.5° C
Problem- An element has a mass number of 27 and has 13 electrons how many protons does this element have
A sample of H½O with a mass of 46.0 grams has a temperature of -58.0 C. How many joules of energy are necessary to melt 46.0 grams of ice? (Use 2.1 J/g.C for the specific heat of ice, and 334.4 J/g for the heat of fusion of water.)
What is the mole fraction of butanol (MM = 74.12 g/mol, D = 0.810 g/mL) when 32.94 mL of butanol is mixed with 20.43 mL of ethanol
Tetraphosphorus decaoxide reacts with water to form phosphoric acid, a major industrial acid. In the laboratory, the oxide is used as a drying agent.
A buffer is prepared by dissolving 10.0 g of NaClO and 10.0 g of HClO in enough water to make 0.500 L of solution. What is the pH of this solution
Problem- The gas phase reaction A + B ? C has a reaction rate which is experimentally observed to follow the relationship rate = k[A]2[B]. The overall order of the reaction
Diamond is the hardest known substance. Fe metal is soft sunstance. Using your knowledge of bonding, explain why diamond is hard
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