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You are given a small bar of an unknown metal. You find the density of the metal to be 10.5 g/cm3. An X-ray diffraction experiment measures the edge of the unit cell as 409 pm. Assuming that the metal crystallizes in a face-centered lattice, what is the metal most likely to be?
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Consider the following equalibrium: 4NH3(g) + 3O2(g) 2N2(g) + 6H2O(g). Suppose 0.30 mol of NH3 and 0.40 mol of oxygen are added to a 5.0-l container. If x mol of water is present at equalibrium, how many moles of ammonia will remain at equalibri..
Calculate the pH of a buffer solution containing 0.65 M CH3COONa. Calculate the pH after 0.0010 mol HCl is added to 450.0mL of buffer.
What is the pressure of the gas in this mercury manometer if h = 73 mm and atmospheric pressure
What possible enzyme activities would be most helpful in devising a method for prenantal diagnosis of I-cell disease?
A 25.00mL sample of vinegar, containing acetic acid was titrated utilizing 0.604 M NaOH solution. The titration required 29.61mL of the base. Presuming the density of the vinegar to be 1.01 g/mL, explain what was the percent (by mass) of acetic ac..
If 3.0 Ml of distilled water is added to 2.0 ml of 0.35M CoCl2 solution, what is the concentration of the resulting solution.
A cylindrical steel pipe is used to transport hydrogen gas in a certain process. The density of the hydrogen in the pipe is 5kg/m3 and the density in the environment is effectively zero
In reference to the tripeptide Gly-Ala-Val, what is the isoelectric point at a pH of 5 and in what direction would it move if placed in an electric field.
An ink cartridge for my printer costs $32 and contains 0.500 ounces of ink. What is the cost of this ink in cents per gram? Note: 1 ounce = 0.0283 kg
Imagine that it is a very hot summer day outside. To help quench your thirst while outdoors, you decide to make yourself a big batch of ice tea. When you add large quantity of sugar to the tea to sweeten it, you notice that where the sugar lands o..
When doing a recrystallization, why is it important to allow the saturated solution to boil for ~1 minute and cool SLOWLY to room temperature before placing it in an ice-water bath?
If 1.00 mol of argon is placed in a 0.500-L container at 18.0 C, what is the difference between the ideal pressure (as predicted by the ideal gas law) and the real pressure (as predicted by the van der Waals equation)
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