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Two solutions, "A" and "B", are labeled "0.21 M CaCl2" and "0.34 M CaCl2", respectively. Both solutions contain the same number of moles of CaCl2. If solution A has a volume of 25 mL, what is the volume of solution B?
To what final volume should you dilute 50.5mL of a 4.30 M KI solution so that 22.5 mL of the diluted solution contains 3.80g of KI
Draw a titration curve for both of these peptides. Be sure to label the axes properly, indicate the pKa values, the equivalence points and the buffering regions.
If 28.1713 g of unknown was added to 859.6 g of phenol to prepare the solution, calculate the molar mass (MM) of the unknown.
A 27.21 g sample of a substance is initially at 25.4 °C. After absorbing 2591 J of heat, the temperature of the substance is 199.8 °C. What is the specific heat (c) of the substance?
A 0.150-mole quantity of NiCl2 is added to a liter of 1.20 M NH3 solution. What is the concentration of Ni2 ions at equilibrium. Assume the formation constant* of Ni(NH3)62 is 5.5 × 108.
The following reaction takes place in a sealed 40.0-L container at a temp of 120 degrees C 4NH 3(G) + 5 O2 (g) --> 4NO (g) + 6H2O (G)
Draw the molecular orbitals for each geometry, using the 2s orbitals as a basis set. Give the expected ground state for each geometry.
An expanding gas does 175.0 J of work on its surroundings at a constant pressure of 1.0 atm. If the gas initially occupied 68.0 mL, what is the final volume of the gas
Using the 3 errors (systematic, random, and human) what type of errors do each of the following represent. explain each answer. a. measuring from the wrong end of the ruler b. measuring with the wrong unit
The johns family has a water tank that can deliver 10,000 cu ft of CO2 qt 20 degrees celcius with a pressure of 1ATM If the johns tank volume was cut in half and the pressure increasses
calculate the volume in ml of .500 M HA , .5ooM NaA , and water required to make 250 ml of a buffer with a total concentration
What will happen to the pressure if 1 mole of N2 gas is added to the container while keeping the temperature and size of the container the same
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