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What is the final temperature of the water after thermal equilibrium is reached when the specific heat of water is 4.184J/gk and a 25.0g sample of water at 37.3deg Celsius is mixed with the
What total force is needed to provide the plane an acceleration of 3.9 m/s2 down the runway for takeoffs? Deduce your answer by using two significant figures.
Explain what change would you expect on the rate of the SN2 reaction of 1-iodo-2-methylbutane with cyanide ion if the nucleophile concentration is unchanged and the alkyl halide concentrat
Explain what change would you expect on the rate of the reaction of ethanol with 2-iodo-2-methylbutane if the nucleophile concentration is halved by adding diethyl ether as an inert solve
The weights are then exchanged and balance is again obtained by shifting the pivot point to the 43 cm mark. Determine the mass of the meter-stick and the position of its center of gravity.
Write down a balanced equation, and use the following data to calculate the amount of energy released (in kJ/mL) from the combustion of cooking fat: Formula=C51H88O6 One possible use for the cooking
A person's reaction time is usually not fast enough to let the person to catch a dollar bill dropped between the fingers. When a typical reaction time in this situation is 0.25s, determine how long
A 50-g sample of impure KClO3 (solubility = 7.1 g per 100 g H2O at the 20 degrees C) is contaminated with 10 percent of KCl (solubility = 25.5 g per 100 g of H2O at 20 degrees C).
Find number of ways are there to distribute 15 distinguishable objects into 5 distinguishable boxes so that boxes have 1, 2, 3, 4, and 5 objects in them, respectively.
A string is wrapped about the middle part so you can pull horizontally (from the middle part top side) with a force T. i) Find out the net frictional force on the spool in terms of T, r and R.
Determine the approximate freezing point of a solution made from 21.0 g NaCl and 1.00 x 102 g H2O. The Kfof water is 1.86 degrees C/m.
Determine the distance among the first and second dark bands in the interference pattern?
Determine how many grams of benzoic acid must be dissolved in the150 milliliters of water in order to produce a solution having pH of 2.50.
Determine the value of the equilibrium constant for the reaction.Based on the equilibrium constant values for the following reactions:
Assume you start with the pile of n stones and split the pile into n piles of one stone each by successively splitting the pile of stones into 2 smaller piles.
Determine the osmotic pressure of a solution prepared from the 13.7 g of the electrolyte HCl and 0.500 kg of water at 18 degrees C?
Determine how many moles of a solid NH4Cl must be added to 1.0liter of 2.00 NH3 in order to produce a final solution having a pH of 9.40?
Determine how many moles of solid NaOH must be added to this solution to increase the final pH to 5.75? A balanced buffer is prepared by dissolving the 1.0 mole ofNaC2H3O2 in 1.00 liter of 1.00
Determine the electronic contribution Selec to the standard to the standard molar entropy of the gas 298.15K. Compute a gas @ temperature T whose molecules have three electronic energy levels.
The concentration of acetylsalicylic acid (C9H8O4, molar mass = 180. g/mol) in your blood is found to be 2.99 x 10-4 M after you take two tablets.
Determine the pressures in each of the containers. Determine the final pressure of the system if all containers are connected together and the gases are allowed to mix.
Explain how long will it take for the reaction to be 90% complete? It takes 42.0 min for the concentration of a reactant in a first-order reaction to drop from 0.45 M to 0.32 M at 25 degrees C.&nbs
Determine how many moles of carbon dioxide gas are there in a sample collected over water if the sample volume is250.0 mL at 25°C and a total pressure of 780 mmHg?
Explain what mass of Al is required to form the 2.000 L of hydrogen at the 875 mm Hg and 15°C?Consider the reaction of Aluminum with acid.
A car of 1120 kg and truck of 4000 Kg experience a perfectly inelastic collision. Before the collision, the car was traveling south-ward at 1.55 m/s and the truck west-ward at around 8.50 m/s. Dete