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Question: A person ate 0.941 pound of cheese (an energy intake of 7530 kJ). Suppose that none of the energy was stored in his body. What mass (in grams) of water would he need to perspire in order to maintain his original temperature? (It takes 44.0 kJ to vaporize 1 mole of water.)
How much heat is required to take a 15.0 g sample of ice with an initial temperature of 0.00oC and raise it to a final temperature of 75.0 oC.
A solution is made by mixing 0.5 L of 1.0 molarity KBr and 0.5 L of 1.0 Molarity K3PO4. What is the concentration of each ion in the solution
The major isotopes of tungsten are 182W(26.32 %), 183W(14.31%0, 184W(30.67%), and 186W(28.62%) What is the atomic weight of W?
C2H6, is completely combusted in oxygen. If the total mass of CO2 produced is 34.8 grams, what was the approximate mass of the methane in the original mixture?
You collected a tissue specimen that you would like to preserve by freeze drying. To ensure the integrity of the specimen, the temperature should not exceed -10.5C. The vapor pressure of ice at 273.16K is 611 Pa
Questions on chemical equations - Write a balanced equation for this reaction. Include the states of matter for each compound.
The density of diamond is 3.51 g/cm . The international (but non-SI) unit for weighing diamonds is the "carat" (1 carat = 200 mg exactly.) What is volume of a 0.66 carat diamond?
Calculate the molecular weight of the white solid. Balance equation (3) for the general case of CxHyOz
Phosphorous acid, is an important compound in industry and agriculture, H3PO3(aq), is a diprotic oxyacid .determine the pH for each of the following points in the titration of 50.0 mL of a 1.5 M H3PO3(aq) with 1.5 M KOH(aq).
What is the horizontal component of the traction force acting on the leg? (c) What is the magnitude of the force exerted on the femur by the lower leg
Splitting patterns and integrations may be used more than once, or not at all, as needed. Likewise, some bins might remain blank. Note that peak heights are arbitrary and do not indicate proton integrations.
A student weighed 0.4521 g of sodium oxalate and dissolved in 50 mL of distilled water and 10 mL of 4.0M H2SO4. The solution was titrated with 58 mL of KMnO4, what was the concentration of KMnO4.
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