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Caves form mostly from the reaction of weak carbonic acid (which forms due to carbon dioxide that is in the water) with exposed limestone. What numbers go in the blanks below, in order from left to right, to balance this chemical equation? ___H2CO3(aq) + ___CaCO3(s) --> ___Ca(HCO3)2(aq) + ___CO2(g) + ___H2O(l)
Magnesium oxide decomposes into magnesium and oxygen. If 12.09 of magnesium oxide decomposes to form 7.29 of magnesium, what mass of oxygen gas is also released in the reaction?
Creatine is a by-product of muscle metabolism, and creatinine levels in the body are known to be a fairly realiable indicator of kidney function.
Calculate the molarity of a solution of glycerol made by dissolving 53.000 mL glycerol at 15 'C in enough water to make 270.00 mL of solution.
assuming that radiation with 15.0 cm is used that all the energy is converted to heat and that 4.184 j is needed to
From this stock solution, the student then took 2.00mL and diluted it to a final volume of 10.00mL with water. What is the final concentration of this diluted solution
Predict any precipitates that are formed when the following solutions are mixed and give the net ionic equation. Ba(NO3)2 solution and KOH solution.
Problem- Why is there an octet rule in writing Lewis structures , Why is attaining an octet of electrons important for an atom when it forms bonds to other atoms
the pka of the carboxyl group on the acetyl salicyclic acid is 3.0 . You have 500 liters of 0.1 M acetylsalicyclic acid. How much solid sodium hydroxide has to be added to convert all of the acetylsalicyclic acid into sodium acetylsalicylate but n..
How much of the drug substance has to be used (calculate)? B) How much NaCl do you need to add to hace an isotonic preparation?
an industrial process makes calcium oxide by decomposing calcium carbonate. which of the following is not needed to
25.0 mL of ethanol (density = 0.789 g/mL) initially at 5.4°C is mixed with 34.6 mL of water (density = 1.0 g/mL) initially at 25.3°C in an insulated beaker. Assuming that no heat is lost, what is the final temperature of the mixture?
The diluted reference is placed in a cell with a 1.00-cm light path. You then take 35.0 mL of the well water, treat with HNO3 and excess KSCN, and dilute to 100.0 mL. This diluted sample is placed in a variable pathlength cell. The absorbance of t..
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