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An unknown compound contains only carbon, hydrogen, and oxygen. Combustion analysis of the compound gives mass percents of 31.57% Carbon and 5.30% Hydrogen. The molar mass is determined by measuring the freezing point depression of an aqueous solution. A freezing point of -5.20?C is recorded for a solution made by dissolving 10.56 g of the compound in 25.0 g of water. Determine the molar mass, and molecular formula of the compound. Assume that the compound is a nonelectrolyte.
What is the difference between a strong acid and a weak acid. Calculate [H30+] in each aqueous solution at 25 C and classify each solution as acidic or basic one.
the heat evolved when a mole of octane undergoes complete combustion is 1303 kcal. this is called the heat of
The products of the fastest inactivation process are as explain the mechanism is accountable for the making of the products.
Diet coke Chemistry, You drink a 500 ml bottle of Diet Coke, which has 0 calories. The Diet Coke was chilled to 7 degrees C before you drank it. Approximately how much heat energy is drawn from your body to warm this 500 ml of Diet Coke up to your..
If you start with 2 cubes of ice, each with a mass of 25.0g and at a temperature of -10C, and 25.0ml of water with a temperature of 100C, what will the final temperature of the mixture be
some workers responding to the explosion at the Chernobyl nuclear power plant were exposed to 5 sv of radiation, resulting in the death for many of them. if the exposure was primarily in the form of y rays with energy of 3.3 x10^ -14 J
Diethyl ether C4H10O(l), a flammable compound that has long been used as a surgical anesthetic has a structure
An aqueous solution containing 0.003 M NaCl and 0.005 M CaCl2 is mixed with the polysaccharide alginate to create a high-viscosity liquid that is a component of a wound dressing
1 cfcs were used in hair sprays refrigerators air conditioners and plastic foams.nbsp which properties of cfcs made
Determine the amount of energy or work that the silicon nitride tip could absorb before being plastically deformed, assuming no initial cracks. Volume is in part A.
What is the pH of the final solution when 25 mL of 0.022 M HCl has been added to 35 mL of ) .040 M HCl at 25 deg C
For the reaction 2HI(g) H2(g) + I2(g), Kc = 0.290 at 400 K. If the initial concentrations of HI, H2, and I2 are all 1.50 × 10-3 M at 400 K, which one of the following statements is correct
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