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Question- The metal palladium crystallizes in a face-centered cubic lattice with a edge length of 388.8 pm. What is the density of palladium?
How do I yet start setting this up? Thank you
A stock solution is prepared by adding 24 mL of 0.4 M Na3PO4 to enough water to make 79 mL. What is the PO43- concentration of 25 mL of the stock solution?
A 1.00 g sample of an unknown acid required 17.0 mL of .650 M NaOH to neutralize. What is the molar mass of the unknown acid?
Explain how does the rate differ in the presence of a catalyst. Do you believe that the catalyst would be more effective at higher concentration. Do you have any ideas as to how this catalyst might work, Define what are the charges on the reactant..
Write the competing equilibrium that will occur when a strong acid is added to the following equilibrium: Ca2+(aq) + C2O4 2-(aq) equlibrium CaC2O4(aq)
luminol has a molecular weight of 177 gmol. the forensic technician at a crime scene has just prepared a luminol stock
A stream of humid air containing 1.00 mole % H2O(v) and the balance dry air is to be humidified to a water content of 10.0 mole % H2O. For this purpose
a student was asked to determine the purity of a contaminated sample of ammonium chloride.a sample of 5g was warmed
For the following reaction, 5.02 grams of nitrogen gas are mixed with excess hydrogen gas. The reaction yields 4.74 grams of ammonia. nitrogen (g) + hydrogen (g) --> ammonia (g)
using le chateliers principle to predict the effect of a change in conditions on a chemical equilibrium.nbsple
How many total atoms are there in each unit cell? (b) What is the volume of one unit cell in Å3? (c) Assuming that the atoms are spheres and the radius of each sphere is 1.64 Å
The amino acid Histidine has a side chain for which the pKa is 6.00. Calculate what fraction of the Histidine side chain will carry a positive charge at pH 7.5
how much concentrated solution would you take to prepare 2.85nbsp of 0.570nbsp by mixing with water? hcl is purchased
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