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Predict the physical state of ammonia at -95 degrees C (mp =-77degrees C, Bp =-33 degrees C) and normal atmospheric pressure.
a -solidb-solid and liquidc- gasd- liquide- liquid and gas
Gold is a face-centered cubic structure that has a unit cell edge length of 4.08Angstroms . There are four gold atoms per unit cell. How many gold atoms are there in a sphere that is 20nm in diameter. Recall that the volume of a sphere is (4/3) pi..
what type of conalently bound compound can dissolve in water. what type of sructure and bonding is required
A cup of brewed coffee is made with 9.0 grams of ground coffee beans. If a student drinks four cups of gourmet coffee a day, how much does the student spend on a year's supply of gourmet coffee that sells for $8.99 a pound
A 15.0 grams lead ball at 25.0 celcius ws heated with 40.5 Joules of heat. Given the specifc heat of lead is 0.128 J/ grams. celsius, what is the final temperature of the lead?
How many kilojoules of heat are absorbed when 7.20g of MgO(s) is decomposed into Mg(s) and O2 (g) at constant pressure?
Why is normalization of a probability distribution important? What would one have to consider when working with a probability
formic acid hfor has a ka equal to about 1.8x10-4. a student is asked to prepare a buffer having a ph of 3.4 from a
determine K for this reaction When a sample of 5.63 grams of pure C 5 H 6 O 3 (g) was sealed into an otherwise empty flask of 2.50 L and heated to 200.
The equilibrium constant Kp for the reaction ; CCl4(g) C(s) + 2Cl2(g) at 700 celcius is 0.76 atm. Determine the initial pressure of carbon tetrachloride
The lid is tightly sealed on a rigid flask containing 3.50 L H2 at 17 °C and 0.913 atm. If the flask is heated to 71 °C, what is the pressure in the flask?
Calculate the number of moles of HCl in the solution dispensed and its associated error.
Explain why saturated sodium hydrogen carbonate is used to wash the organic layer in the Friedel Crafts Acylation.
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