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A patient's thyrod gland is to be exposed to an average of 5.5 microcuries for 16 days as an ingested sample of iodine-131 decays. If the energy of the beta radiation is 9.7 x 10-14 J and the mass of the thyroid is 32.0 g, what is the dose received by the patient?
The most important commercial process for generating hydrogen gas is the water-gas shift reaction: CH4(g) + H2O(g) ? CO(g) + 3H2(g) Use tabulated thermodynamic data to find ?G° for this reaction at the standard temperature of 25°C.
A Nylon 4-6 polymer with an average molecular weight of 10,000g/mol is reffered to as Nylon 4-6 (10,000). If one repeat unit of Nylon 4-6(10,000). If one repeat unit of Nylon 4-6 has a molecular weight of 198.26 g/mol, how many repeat units are pr..
Addition of HBr to 1-phenylpropene yield only (1-bromopropyl)benzene. Propose a mechanism for the reaction and explain using resonance structures why none of the other regioisomer is produced?
When two atoms form a covalently-bonded diatomic molecule, the distance between the nuclei at which the potential energy is at a minimum is called
a molecule has an excited state electronic energy level that emits radiation of 1lambda 360 cm-1 when it falls to the
A 13.00 g sample of an ionic compound NaA, where A- is the anion of a weak acid, was dissolved in enough water to make 100.0 mL of solution and was then titrated with 0.100 M HCl. After 550.0 mL of HCl was added, the pH was 5.00.
Magnesium reacts with sulfuric acid according to the following equation: Mg (s) + H2SO4 (aq) ---> MgSO4(aq) + H2 (g). How many liters of hydrogen gas can be made from 65.6 g of magnesium at STP
What is the heat absorbtion for 100 g liquid water that is frozen to ice at 0 degrees C and 1 atm
a 1.80-g sample of a large biomolecule was dissolved in 21.0 g of carbon tetrachloride. the boiling point of this
Given the following value, tell whether the starting material or product is favored at equilibrium. delta H=6.5 kcal/mol. Is this a starting material favored, or product favored
potassium fluoride has a solubility of 92g of KF in 100 g of H2O at 18 degrees C. which of the following are saturated solutions and unsaturated solutions at 18 degrees C: a)46 g of KF and 100 g of H2O. b)46 g of KF and 50 g of H2O. c)184g of KF a..
What is the activation energy of a reaction. What are the two ways that the activation energy can be determined for a reaction, i.e. consider graphing what data and using what formula
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