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Draw the product of the reaction between 1-butyne and NaNH2 in NH3, then D3O+. To add a deuterium atom, first explicitly add an H. Select the H then use the keyboard to type a 'D'. Be sure to consider stereochemistry.
A chemist dissolves 284 mg of pure potassium hydroxide in enough water to make up 140 mL of solution. Calculate the pH of the solution.
Calculate the molar mass of X. 2.Identify the element symbol for X F2+2XBr -----> Br2+2XF
A copper wire (density = 8.96 g/cm3) has a diameter of 0.49 mm. If a sample of this copper wire has a mass of 11 g, how long is the wire in ft?
The total molarity of acid and conjugate base = 0.100M. A boy adds 4.20 milliliters of a 0.370 M solution to the beaker. Determine how much will the pH change?
When sodium carbonate reacts with hydrochloric acid, the carbonic acid that is formed immediately breaks down into carbon dioxide and water.
The average concentration of calcium ion in seawater is 412 mg of calcium ion per kg of seawater. What is the molarity of the calcium ion if the density of the seawater is 1.025 g/mL?
The water level in a graduated cylinder was at 211 rises initially it raised to 270 after adding a piece of lead is submerged. Determine the mass in grams of the lead?
When there are branches in either the acid or the alcohol, how do you name the ester formed from the reaction of these two? For example,
Calculate the enthalpy change in kJ when 21.6g of H2S is burned. 2H2S(g) + 3O2(g) --> 2SO2(g) + 2H20(g) Change in H=-1036kJ/mol
Calculate the amount of heat needed to boil benzene (C6H6), beginning from a temperature of 6.7 degrees celcius.
Calculate the change in temperature for 4.5g of CaCl2 dissolved in 90.0mL of H20. Assume that calorimeter absorbs no heat. (Ccal=0)
A 28.5 g sample of an unknown metal is heated to 95.0C and then dropped into 58.0 g of water in a coffee-cup calorimeter. The temperature of the water rises from 23.5 C to 27.1C.
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