How many moles of ca2+ are in a 25.00 ml aliquot of the soln
a 0.5118 gram sample of CaCO3 is dissolved in 6 moles of HCL, and the resulting solution is diluted to 250.0 ml in a volumetric flask. How many moles of Ca2+ are in a 25.00 ml aliquot of the solution.
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A certain monoprotic weak acid with Ka = 6.8 × 10-7 can be used in various industrial processes, but is no longer used in chemistry teaching labs because it tends to explode when it gets old. (a) What is the [H+] for a 0.748 M aqueous soluti
A buffer solution is made by dissolving 0.45 moles of a weak acid (HA) and 0.33 moles of KOH into 800 mL of solution. What is the pH of this buffer? Ka = 5.9 × 10-6 for HA.
A 2 L bottle of a carbonated beverage (Coke) at 20 °C is placed in a cooler with 10 L of saturated liquid water and 30 kg of ice (both at 0.01 °C).
The forward-bias current in a GaAs pn-junction at T = 300 K is ID = 15 mA. The reverse-saturation current is IS = 10^-19 A. Determine the required forward-bias diode voltage.
Ethylene glycol, antifreeze, has a density of 1.11 g/cm^3. What is the mass, in grams, of 410 mL of ethylene glycol?
Calculate the temperature change in the water upon complete melting of the ice. Determine how much heat is absorbed by the melting ice and then use q =mC Delta T.
A venturi meter is inserted in a pipe whose diameter is 12 in. The diameter of the meter at its throat is 6 in. and the factor C1 for the meter is .980.
If it takes 526 J of energy to warm 7.40 grams of water by 17 degrees Celsius, how much energy would be needed to warm 7.40 grams of water by 55 degrees Celsius?
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