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Phosphorus-33 is a radioactive isotope which decays by beta emission. What is the complete nuclear equation for this reaction and what is occurring.
The titration required 20.34 mL of 0.0491 M thiosulfate solution. Calculate the weight percent of ascorbic acid in a tablet of Vitamin C
If 10.0 mL of 0.00200 M KNCS is mixed with a very large excess of Fe(NO3)3, how many moles of FeNCS2+ product should form
a 4.0 g sample of iron was heated from 0 degrees celsius to 20 degrees celsius. it absorbed 35.2 j of heat. what is the specific heat of this piece of iron?
The highly exothermic thermite reaction in which aluminum reduces iron (III) oxide to elemental iron, has been used by railroad repair crews to weld rails together. Explain What mass of iron is formed when 725 KJ of heat are released
Phosphorus-32 has a half-life of 14.0 days. Starting with 8.00 g of Phosphorus-32 , how many grams of P-32 will remain after 98.0 days?
An isotonic solution is described as 0.92% NaCl (g/mL). Would this also be the required concentration for isotonic solutions of other salts, such as KCl, MgCl2,
An unknown compound degrades when exposed to sun light by first order kinetics. The half-life for this process is exactly 5.12 weeks. What is the rate constant
Using a spectrometer and beers law to determine % of copper in a brass sample: what equations are used to determine all.
A gaseous oxide of nitrogen has an empirical formula of NO2. A 0.556 g sample of this gas in a 250. mL container at 24ºC exerts a pressure of 44.8 cm Hg. What is the molecular weight of the gas? What is the molecular formula of the gas
Write the structure for the pyrrolidine enamine and for the imine of cyclohexane. Write a balanced equation for the acid-catalyzed hydrolysis of each of these compounds.
What is the molarity of a sodium chloride solution if 2.45 grams of NaCl is dissolved in 250 mLs of water? C. How many grams of solute are in 1.75 Liters of 0.460 M sodium monohydrogen phosphate? Please explain
Using standard free energy of formation values given below, calculate the equilibrium constant K_p of the reaction
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