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Write the net ionic equation to show the formation of a precipitate (insoluble salt) when the following solutions are mixed. Write noreaction if no insoluble salt forms KCl(aq)+Pb(NO3)2(aq)
Select the most appropriate explanation of the following observation on solubility: "Hydrogen chloride, HCl, is very soluble in water." Water is a polar solvent, and it promotes the ionization of many polar molecules.
Consider a piece of gold jewelry that weighs 9.55 g and has a volume of 0.660 cm^3. The jewelry contains only gold and silver, which have densities of 19.3 {rm g}/{rm cm}^{3} and 10.5 {rm g}/{rm cm}^{3}, respectively.
Show the orbital-filling diagram for N (nitrogen). Stack the subshells in order of energy, with the lowest-energy subshell at the bottom and the highest-energy subshell at the top.
Draw the structure of a DNA nucleotide represented by the abbreviation "C." Do not include formal charges on the phosphate group.
How many mL of a .244 M HCL solution will react with .0235 mole of MgO? The reaction of MgO and HCl is given below.
if 625g of fe3o4 is produced in the reaction, how many molecules of hydrogen are produced at the same time?
Vitamin C is helpful in the absorption of what mineral (metal) when the two are present in the gut simultaneously?
Give the reaction scheme, showing the products formed (before hydrolysis), when one equivalent of ethylmagnesium bromide is treated with one equivalent of 5-hydroxy-2-pentanone
Indicate how many electrons are transferred in the formation of one formula unit of product
What concentration of aqueous CaCl2 solution freezes at -10.2ºC? The freezing point of pure water is 0.0ºC and Kf of pure water is -1.86ºC/m.
A solution containing 10g of a non-ionic compound in 90g water has a freezing point of -3.33 degrees C. Given that Kf = 1.86 degrees C/m for water
It is determined that 3.75 x 10^-4g of a contaminant is present in 3750g of a particular solution. What is the concentration of contaminant in ppm (m/m)?
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