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If you used 1.00g calcium chloride (CaCl2) in an experiment, how many moles CaCl2 did you use? (MW ca= 40, MW Cl =35) (show all calculations).
The molecular weight of the protein is 3.4e4 grams per mole. What is the molar concentration of the protein?
Does adding boiled, deionized water to the titrating flask to wash the wall of the Erlenmeyer flask and the buret tip affect the Ksp
Analyze the groups bonded to the carbon of interest. Every H contributes +1, and every oxygen contributes -2. An -OH group contributes (-2 + 1 = -1). Ignore carbons bonded to the carbon of interest. The sum of the oxidation states must be zero, si..
How much dry solute would you take to prepare each of the following solutions from the dry solute and the solvent?
One mole of an ideal gas with a volume of 1.3 L and a pressure of 6.9 atm is allowed to expand isothermally into an evacuated bulb to give it a total volume of 3.1 L. Calculate w and q. Also, calculate qrev for this change of state.
During a tritration, 34.62 mL of 0.1510 M NaOH was needed to neutralize 50.0 mL of an H2SO4 solution. What was the concentration of the original sulfuric acid solution?
You are using a Geiger counter to measure the activity of a radioactive substance over the course of several minutes. If the reading of 400. counts has diminished to 100. counts after 36.9minutes , what is the half-life of this substance
A sample of oxygen gas has a volume of 131 L at 25°C and a pressure of 0.982 atm. Calculate the volume of this oxygen sample at STP.
1.) The next three questions are related to the analysis of mercury (200.59 g/mol) in the sample of mercuric ointment described here.A 4.031 g sample of a mercuric ointment is digested in nitric acid. After dilution, the Hg2+is titrated with 32.50 mL..
Identify the major type of interactive force of MgF2? how do you find the major type of interactive force?
Find the mass of barium metal (in grams) that must react with O2 to produce enough barium oxide to prepare 1.2L of a 0.11M solution of OH^- Thanks in advance.
In performing TLC to test the purity of aspirin acetaminophan and caffeine, Explain how will using a vey polar solvent affect the movement of the spots on your plate
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