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What pH range would you expect the equivalence point to lie for the titration of a weak base (such as ammonia) with a strong acid (such as HCl)? And what would be the net ionic equation for the reaction?
Is it desirable to replace the emitter in BJT with a metal?
Do you experimental data substantiate the rule of thumb regarding the effect on the reaction rate of a 10-degree increase in reaction temperature. Briefly explain
Determine how many grams are in 1 mole of salt. How many individual ionic compounds of NaCl are in 1 mole
The sulfur dioxide stack gas concentration from fossil fuel combustion is 2ppm(v). Determine the stack-gas concentration in units of micro grams/m^3 assume 0 degrees Celsius and1atm.
Calculate the pH of a solution made by adding 24 g of sodium acetate, NaCH3COO, to 26 g of acetic acid, CH3COOH, and dissolving in water to make 200. mL of solution.
reaction of aqueous solutions of barium chloride and sodium sulfate results in the formation of a percipitate of barium
A sample containing 42 ml of 0.0625 M NaBr was made by adding 37.8 ml of water to an initial solution of concentrated NaBr. Explain what the concentration of NaBr was in the initial solution
The addition of 119g potassium fluoride to 602 ml of water (d=1.00g/ml) causes the temperature to rise 4.0 degrees Celsius. What is the delta Hrxn for this process.
Problem- Draw stereochemical projections for the products of bromine addition to maleic acid and fumaric acid (cis and trans HOOCCH=CHCOOH, respectively) assuming that bromine adds to these compounds the same way it does to cinnamic acid.
The Ksp of barium carbonate (BaCO3) is 5.0*10^-9 at 25.0 C. If a 20.0 mL sample of 0.1 M Ba(NO3)2 is added to 50.0 mL of 0.1 M Na2CO3.
Two 20.0-g ice cubes at -21.0 °C are placed into 235 g of water at 25.0 °C. Assuming no energy is transferred to or from the surroundings, calculate the final temperature of the water after all the ice melts.
An ideal gas mixture contains 35% helium, 20% methane, and 45% nitrogen (by volume) at 2.00 atm absolute and 90 C. Calculate: (a) The partial pressure of each component
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