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A 0.5950-g sample containing one or more of the species (mol. wt.) NaOH (40.00), Na2CO3 (106.0), NaHCO3 (84.01) plus inert ingredients is dissolved in water and titrated with 0.1000 M HCl, requiring 14.11 mL HCl to reach the phenolphthalein end point and 39.74 mL (total) to reach the bromcresol green end point. Calculate the percentage of the principal basic component in the sample (That is, the component that is present in the largest percentage. You will need to determine which species are present and calculate the mass percent for each of them in the sample. Then report the one that is present in the largest percentage).
A small organic molecule required by an enzyme in order for the enzyme to be a functional catalyst is known as a vitamin. Lipids that are solids at room temperature tend to have more double bonds than liquids at room temperature
Calculate the delta G at 400K for the following phase change: Sulfur(monoclinic) to sulfur rhombic. Do not assume that delta H or delta S are independent of temperature
If 545 mL of oxygen gas is collected at 21ºC and 754 mm Hg, what is its volume at STP?
What would the bonding geometry at each nitrogen atom be for the following: NOCl, NO2Cl, and NO3Cl the options are trigonal planar, linear, tetrahedral, and bent
A solution contains 2.2 × 10-3 M in Cu2+ and 0.33 M in LiCN. If the Kf for Cu(CN)42- is 1.0 × 1025, how much copper ion remains at equilibrium
Look carefully at the frontier MOs of the diatomic molecule, BF and determine the most basic site. Based on your observations, predict the structure that results when H+ adds to BF.
What is the lowest possible energy (in electron volts) of an electron in hydrogen if its orbital angular momentum is 2?
4HCl + MnO2 = MnCl2 + 2H2O + Cl2 When 1.22 mol of HCl reacts with excess MnO2, how many moles of Cl2 form?
what is the temperature of 0.44mol of gas at a pressure of 1.2atm and a volume of 12.0L
Calcium carbonate and sand mixture with weight of 4 grams is reacted with excees of HCl results in the production of carbon dioxide then find out the percent of calcium carbonate in the original mixture?
if you burn 51.8 g of hydrogen and produce 463g of water, how much oxygen reacted?
A researcher plans to compare two treatment conditions by measuring one sample in treatment 1 and a second sample in treatment 2. The researcher will then compare the scores for the two treatments.
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