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Two aqueous solutions of sucrose, , are mixed. One solution is 0.1488 and has = 1.018 ; the other is 11.50 by mass and has = 1.038 . Calculate the mole percent in the mixed solution.
A drink sold in a health food store contains 0.300% (w/v) of vitamin C. What would you have to ingest to obtain 1000 mg of vitamin C.
when aluminum is heated in oxygen aluminum oxide is formed. what weight of the oxide can be obtained from 25.0g of the
Consider 4.30 L of a gas at 365 mmH and 20 degrees C. If the container is compressed to 2.40 L and the temperature is increased to 39 degrees C, what is the new pressure, P2, inside the container
The density of titanium metal is 4.51 g/cm3 at 25 °C. what mass of titanium displaces 125.0 ml of water at 25 °C. The density of benzene at 15 °C is 0.8787 g/mL. calculate the mass of 0.1500 L of benzene at this temperture.
What is the percent yield of elemental sulfur if 7.54 grams of sulfur are obtained from the reaction of 6.16 grams of SO2 with an excess of H2S. 2H2S + SO2---> 2H20 +3S
One piece of copper jewelry at 108 degrees Celsius has exactly twice the mass of another piece, which is at 44 degrees Celsius. Both pieces are placed inside a calorimeter whose heat capacity is negligible. What is the final temperature inside the ca..
Calculate the percent of a strontium sample left after 100 years. The half-life of strontium-90 is 28.1 years.
You are given a crushed sample that is a mixture of limestone (CaCo3), lime (CaO), and sand. The calcium carbonate, limestone, is the only material present in the material that will decompose when heated
Octane has a density of 0.692 g/mL at 20 degrees celsius How many grams of oxygen are required to burn 1.10 gal of octance.
Write the structure for the organic reagents and products, name the products and indicate stereochemistry when appropriate
A liquid fuel mixture contains 31.30 \% hexane C6H14, 15.75 % heptane C7H16, and the rest octane C8H18. What maximum mass of carbon dioxide is produced by the complete combustion of 15.0 kg of this fuel mixture
A "free" element A monoatomic ion Part of an ionic or covalent compound Part of a polyatomic ion I know that H and O's numbers can change depending on how they are bound to other elements, but usually H is +1. However a more simple way to memorize..
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