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Calcium and Magnesium carbonates occur together in the mineral dolomite. Suppose you heat a sample of the mineral to obtain the oxides,CaO and MgO, and then treat the oxide sample with HCl. If 7.695g of the oxide sample requires 125 mL of 2,55 M HCl, CaO(s) + 2 HCl(aq)--->CaCl2(aq) + H2)(l) MgO(s) + 2HCl(aq)--->MgCl2(aq) + H2O(l) What is the weight percent of of each oxide (CaO and MgO) in the sample?
Br2 and ICl have similar molecular weights which compund has a higher boiling point specifically
Assuming it behaves as an ideal gas, calculate the temperature of a sample of C3H6 whose molecules have a root mean square molecular
a pencil 7.5 inches long.if there are 2.54cm in an inch,how long is this pencil in decimeters?10dm=1m
The activation energy of a certain reaction is 65.2 kj/molHow many times faster will the reaction occur at 51 degrees C than at 0
Calculate the molarity of a solution made by dissolving 5.00 g of glucose (C6H12O6) in sufficient water to form exactly 100 mL of solution.
Calculate the osmotic pressure of a solution containing 20.00mg of hemoglobin in 16.3mL of solution at 25 ? C The molar mass of hemoglobin
A student wated 20.000 g of salt. Which balance should the student use in order to obtain the most accurate quantity? A.) a Platform Triple Beam Balance
A human body contains 6 liters of blood. The hemoglobin content of blood is about 15.5g/100 mL of blood. The approximate hemoglobin molecular weight is 64,500g/mol. How many moles of hemoglobin are present in a typical adult
How much A would have been extracted into ether if the orginal aqueous solution had been extracted once with a 500-mL portion of ether? What percentage of A would have been extracted by the ether?
What is the pH of a solution made by mixing 30.00 mL of 0.10 M acetic acid with 30.00 mL of 0.10 M KOH? Assume that the volumes of the solutions are additive. Ka = 1.8 × 10-5 for CH3CO2H.
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.
If a bottle of nail polish remover contains 177 ml of acetone, how much heat would be released by its complete combustion? The density of acetone is .788 g/ml
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