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2,2-dibromo-3-methylpentane can be prepared by an addition reaction of excess HBr with an alkyne. Draw the structure of the alkyne, name it, and write the reaction
Equal volumes of 0.180 M weak base (Kb=2.5x10^-9) and 0.180 M HCl are mixed. Calculate the pH of the resulting solution.
a certain anesthetic contains 64.9 percent C, 13.5 percent H, and 21.6 percent O by mass. at 120 grades celcius and 750 mmHg, 1.00 L of the gaseous compound weighs 2.30g. What is the molecular formula of the compound?
Which of the following properties indicates the presence of strong intermolecular forces in a liquid
The balloon ascends to an altitude of 20 , where the pressure is 76.0 and the temperature is 50. . What is the new volume, , of the balloon in liters, assuming it doesn't break or leak
Write balanced equations for the following reactions: preparations fo the semicarbazone of cyclopentanone, preparations of the 2,4-DNP of benzaldehyde, tollen's test for formaldehyde, idoform reaction with acetophenone.
A list of the calorie content of foods indicates that a 10 oz chocolate thick shake contains 331 Calories. Express this value in kJ and in J
values for an equlibruim constant suggests that at equilibrium the mixture contains a high concentration of products?
A buffer is formed by mixing 100 mL of 0.1 M NH4Cl with 50 mL of 0.3 M NH3. To this solution 12 mL of 0.1 M NaOH is added. What is the approximate pH of the new solution after neutralization? Assume a Kb of 1.8 × 10^-5 for the weak base.
At what temperature is the change in entropy for the reaction equal to the change in entropy for the surroundings?
How many different types of resonance structures can be drawn for the ion SO32.
What mass of formaldehyde gas must be released from building materials to produce a concentration of 50 ppm of the gas in a room with dimensions of 4m*5m*2m?
What is the de Broglie wavelength (in nm) associated with a 2.50-g Ping Pong ball traveling 35mph?
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