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Suppose that you were pumping an automobile tire with a hand pump that pushed 24.0 inches cubed of air into the tire on each stroke, and that during one such stroke the opposing pressure in the tire was 30.0lb/in2 above the normal atmospheric pressure of 14.7 lb/in2. Calculate the number of joules of work accomplished during each stroke (1 atm= 101.325 J)
Compute How many mg of the compound P do you have in 20ml of 4% (w/v) solution of P
The activation energy of the orginal pathway is 106 KJ/mol. What is the activation energy of the new pathway, all other factors being equal?
Balance the equation using the smallest possible integers. Also determine the sum of the coefficients of the reactants?
Dry ice (solid ) has occasionally been used as an "explosive" in mining. A hole is drilled, dry ice and a small amount of gunpowder are placed in the hole, a fuse is added, and the hole is plugged.
62.8 mL of air is collected over water at 24 degrees celsius and 733 mm Hg pressure. find the volume of the dry air at STP
The specific heat of the mixture is 4.21 J/(g.c), What is the enthalpy change for the neutralization reaction of 2.80 mol of CsOH in KJ?
How many grams of dry NH4Cl need to be added to 2.50 L of a 0.100M solution of ammonia, NH3, to prepare a buffer solution that ahs a pH of 8.80?
Classify the following compounds and ions as strong acid, weak acid, strong base, weak base, or neutral. For each write the reaction(s) that justify your decision. If a substance is amphiprotic, show both reactions.
How many grams of sodium phosphate will be needed to produce 500ml of a solution that has a concentration of Na+ ions of 1.10M ?
How many grams of sucrose must be added to 552 g of wwater to give a soution with a vapor pressure 2.0 mm Hg less than that of pure water at 200C ?( the vapor pressure of water at 200C is 17.5 mm Hg)
Consider the following thermochemical equation: CH4(g) + I2(g) --> CH3I(g) + HI(g) Enthalpy Value = +23 kJ
For carbon tetrachloride, the boiling point constant is 5.03°C · kg/mol, and the boiling point of pure carbon tetrachloride is 76.50°C.
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