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The dosage of technetium-99m for myocardial imaging is 150 μCi/kg of body weight. How many mCi should be given to a patient weighing 45 kg? (1 mCi = 1000 μCi)
calculate the amount of energy in kilojoules needed to change 153g of water ice at -10 C to steam at 125 C.
A class is provided with the same mass of pb(II) nitrate but different masses of sodium iodide. the masses of lead II iodide produced will be determined by weighing.
ca3fpo43s 5h2so4l 10h2ol ---gt 5caso4.2h2os hfg 3h3po4for each 100.0 grams of phosphoric produced what volume of
Draw the structure of (E)-2,3,5-trimethyl-3-hexene. Clearly show the proper (E) or (Z) stereochemistry about the double bond.
Hydroxylamine nitrate has the following percent by mass composition: 29.17 % N, 4.20 % H, and 66.63 % O. Determine its empirical formula
list the following bonds in order of increasing ionic character: the lithium-to-fluorine bond in LiF, the potassium-to-oxygen bond in K2O, the nitrogen-to-nitrogen bond in N2, the sulfur-to-oxygen bond in SO2, the chlorine-to-fluorine bond in ClF3..
Draw the structures of the two carbocation intermediates that might form during the reaction of the alkene (below) with HCl. If the two carbocations differ in stability, draw a reaction arrow from the less stable to the more stable.
The combustion of propane (C3H8) in the presence of excess oxygen yields CO2 and H2O:
The equation below shows the final product in the reaction of propan-1-ol with potassium permanganate in acidic solution. Draw the structure of the compound that forms initially in this reactionn.
If the protein has a molecular weight of 15,000, express its initial concentration in umoles/ml and in umoles/ul. If we want 2 umoles of the protein for a reaction, how much of the original solution do we need
if i have 5.6 liters of gas in a piston at a pressure of 1.5 atm and compress the gas until its volume is 4.8 liter what will the new pressure inside the piston be?
A gas-filled balloon having a volume of 2.00 L at 1.2 atm and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth), where the temperature and pressure are -23°C and 3.00 10-3 atm, respectively. Calculate the final v..
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