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what approximate mass of potassium permanganate is required to make 400 mL of 0.02 M solution? Suppose that you weighted out approximately this amount of potassium permanganate and dissolved it in distilled water to make 400 mL of solution. 0.1038 grams of pure dry sodium oxalate was placed in Erienmeyer flask and dissolved in .75 M sulfuric acid. This acidic solution of sodium oxalate was titrated against the potassium permanganate solution. The volume of potassium permanganate required to reach the end point was 12.31 mL. 1) How many sodium oxalate were used in the titration? 2) Calculate the equivalent number of moles of potassium permanganate? 3) calculate the clarity of the potassium permanganate solution?
What is the number of moles of O2 needed to burn 260.0g of C2H2 in the reaction: 2C2H2 + 5O2 yields 4CO2 + 2H2O?
if 100 mL of 0.100 M NaCl is added to 100 mL of .01 M NaCl, what is the concentration of Na ions in the final solution?"
How many grams of F2 are needed to produce 157 g of PF3 if the reaction has a 79.8% yield?
Mass of Carbonates Needed to Raise Solution pH One Unit, An actual lab titration of a mildly acidic process water at a pH of 4.0 requires 0.9 grams/liter of Na2CO3 to raise the pH from 4.0 to 5.0; re-running the titration but this time using CaCO3..
If 4.00 g of the unknown compound contained 0.133 mol of C and 0.267 mol of H, how many moles of oxygen, O, were in the sample?
25 g of gold is initially 27 degrees celsius. what's the final temperature when absorbing 2.35 kJ of heat?
If the total pressure in the flasks is 311 torr after the stopcock is opened, determine the initial pressure of N2 in the 1.00 L flask.
Describe the hybrid orbitals used by the central atom in O 3 .and also determines what is the number of sigma and pi bonds present in O 3 .
Calculating effective charges on I and Br, The iodine monobromide molecule, IBr, has a bond length of 2.49 Angstroms and a dipole moment of 1.21 D.
Discuss in detail the healthcare applications of chemical reactions. Which chemical reactions would you consider to be of importance to healthcare professionals?
Pyridine(C5H5N) is a weaker base in H2O than 2,6 lutidine (dimethylpyridine), but we observe that the pyridine-BF3 complex is more stable than the comparable lutidine-BF3. Explain the reason for this inversion in stabilities.
what is the mole fraction of hydrogen in a gaseous mixture that consists of 8.00 g of hydrogen and 12.00 g of neon in a 3.5 liter container maintained at 35.20 degrees celsius?
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