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How many grams of MgCl2 would be needed to prepare 1.000 L of a solution that is 236 ppm in Mg2+ ions? Note: there is one Mg2+ ion in every MgCl2. Report your answer to the correct number of sig figs.
Caprylic acid (144.21g/mol), pKa= 4.89, density= 0.910 g/cm3, solubility= 0.068g/100mL, melting point= 16.7 c, boiling point= 239.7 c. What is the pH of a saturated aqueous solution
If 18.26 grams of sulfuric acid are reacted with a large amount of aluminum metal, what volume of hydrogen gas would be produced at STP?
To identify a diatomic gas (x2), a researcher carried out the following experiment: She weighed an empty 4.8- bulb, then filled it with the gas at 1.40atm and 20.0 degC and weighed it again. The difference in mass was 7.9g . Identify the gas. Expr..
How much water must be added to 488 mL of 0.223 M HCl to produce a 0.134 M solution?
Draw a separation scheme for isopentyl acetate from its reactants (isopentyl alcohol, glacial acetic acid, and concentrated sulfuric acid)
In the early days of the periodic table, the 1870s, both silicon and tin were known elements, but germanium was unknown. Using these trends and the densities of silicon and tin that you just obtained, estimate the density of germanium?
Presence of Aldehyde Group, An excellent way to identify the presence of an aldehyde group is by 1H NMR. The chemical shift of the aldehydic proton occurs in the 9-10-ppm region
calculate the freezing point of this solution, boiling point of this solution, the vapor pressure change (from 23.76 torr at 25C) for the solution, the osmotic pressure of the solution, and the height of a column of water corresponding to this osm..
cyclohexane-toluene mixture, and then obtain IR spectra for each fraction. How would the IR spectrum of the first 1 mL fraction look different from that of the last 1 mL fraction?
Upon reaction with excess sulfamic acid, HSO3NH2, a 0.121g sample of a mixture of sodium nitrite, NaNO2, and sodium chloride, NaCl, produced 28.3 mL of nitrogen gas collected over water at 25.3 degrees Celsius and at a barometric pressure of 738 m..
Excessive quantities of wash water are added to the CaC2O4. H2O precipitate. Will the mass of the CaC2O4. H2O be reported too high, too low, or remain unaffected? Explain
In a butane lighter, 9.8 of butane combines with 35.1 of oxygen to form 29.6 carbon dioxide and how many grams of water.
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