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In the reaction BaCO3 + 2HNO3 -> Ba(NO3)2+CO2+H2O, what mass of Ba(NO3)2 can be formed by combining 55g BaCO3 and 26g HNO3?
osmium has a density of 22.6 g/cm3. what volume (in mL) would be occupied by a 21.8 g sample of osmium?
calculate the concentration of an NaOH solution if 25.0ml of the solution is needed to neutralize 17.5ml of a 0.419M HCL solution
Number of protons & the number of neutrons in the nucleus of the element boron and potassium and the number of electrons in their 1st & 2nd quantum shells?
The initial concentration of some weak acid, HA, in an aqueous solution is 0.2150 M, at equilibrium the concentration of HA becomes 0.0955 mol/L.
An electric power station annually burns 3.3 107 kg of coal containing 1.4 percent sulfur by mass. Calculate the volume of SO2 emitted at STP
Determine the quantity of unknown protein that has an absorbance of 0.227 when a blank has an absorbance of 0.081. The previously determined calibration curve has the form of a straight line with the equation A = 0.0182 × m 0.007
what the oxidation state P in PO4^-2? what the oxidation state O in PO4^-2?
Lime, CaO, is produced by reaction CaCO3(s) CaO(s) + CO2(g). What weight of CaO is obtained by the decomposition of 38.7g of CaCO3.
Chemistry Concentrations, In each of the following pairs, indicate which has the higher concentration of Cl- ion
A chemist wants to make 5.5L of a 0.280M CaCl2 solution.What mass of CaCl2 (in g ) should the chemist use
Lipids (fats) are esters of long chain fatty acids and glycerol. Similarly, describe the general structures of proteins and carbohydrates.
You are asked to prepare 150 mL of a 0.059 M solution of silver nitrate. How many grams of silver nitrate do you need to weigh out.
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