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Uranium (U), with a mass number of 230 and an atomic number of 92, decays by emission of an alpha particle. Identify the product of the nuclear reaction by providing its atomic symbol, mass number, and atomic number.
Consider the titration of 50.0 mL of 0.217 M HN3 (Ka = 2.6 x 10-5) with 0.183 M NaOH. Calculate the pH of the solution after the addition of 29.6 mL of NaOH solution.
how much energy in kilojoules is required to convert 195ml of diethyle ether at its boiling point from liquid to vapor
How many moles of water can be produced by 12.5 moles of C4H10 with excess oxygen?
Chlorine reacts with potassium iodide. What would the color of the resulting solution be. What is the oxidation half-reaction for this step.
Hydrogen gas can be produced in the laboratory through the reaction of magnesium metal with hydrochloric acid
When 35.0 g of an unknown nonelectrolyte is dissolved in 220.0 g of benzene, the solution boils at 83.2°C. Calculate the molecular weight of the unknown nonelectrolyte. The Kb for benzene = 2.53°C/m. The boiling point of pure benzene is 80.1°C.
A tank having a volume of 1000 ft3 contains 22 lb of CO2, 46 lb of O2 and 154 lb of N2. What pressure will be indicated by a pressure gage attached to the tank if the gas is at ambient temperature (80°F)
Problem- If I reacted 2 equivalents of CH3CH2OCOCH2COOCH2CH3 with 1) Naoch2ch3 2) Brch2ch2ch2Br 3) NaOH 4) H3O+ 5) Heat then what product could I expect? My guess is cycloproyl carboxylate acid.
How can you decide whether an observed property of matter is a physical or chemical property
A piece of copper of mass 20.0g at 100.00C is placed in a vessel of negligible heat capacity, but containing 50.7g water at 22.0C. Calculate the final temperature of the water. (Assume no energy is lost to surroundings)
What is the partial pressure of each of the components. b. If the temperature is raised to 45°C, will the partial pressures change? If so, what will they be
A pstient is administered mercury-197 to help evaluate kidney fuction. Mercury-197 has a half - life of 65 hours. what fraction of an initial of an initial does of mercury
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