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If you have a 25 mL solution that contains 47 ug/dL of iron, how many grams of iron must be removed to reach a concentration of 23 ug/dL? How many moles of iron is this?
On heating 5.03 g of hydrated barium chloride, 4.23 g is left behind. What is the name of this hydrate?
If 159 of wet is collected over water at 24 and a barometric pressure of 737 , how many grams of have been consumed.
I don't understand don't we draw a lewis structure first and add 2 lone pairs to complete the octet making it a tetrahedral. how does it only have 3 covalent bonds
Calculate the hydrogen Ion concentration, in moles per liter, for solutions with each of the following pH values.
Hydrogenation reactions are used to add hydrogen across double bonds in hydrocarbons and other organic compounds. Use average bond energies to calculate DELTA Hrxn for the following hydrogenation reaction:
CaH2(s) + 2H2O(l) Ca(OH)2(aq) + 2H2(g) How many grams of CaH2 (Molar Mass = 42.1 g/mol)are needed to generate 10.0 L of H2 gas if the pressure of H2 is 769 torr at 28.0°C?
28.80 mL of a 0.1726 mol/L EDTA solution is required to titrate a sample to the equivalence point. How many moles of divalent metal cations were in your sample
The following reaction is first order with respect to NO and first order with respect to O2, and the rate constant is 5.0 x 104 M-1s-1
The standard deviation is 50768, and the RSD % is 12.4%. The original mass of the tablet was 679.1 milligrams. How do I find how many milligrams of caffeine was in the original tablet
How many grams of carbon dioxide (CO2) can form when a mixture of 4.95 g of ethylene (C2H4) and 3.25 g of oxygen is ignited. Assume complete combustion to CO2 and H2O.
If the reaction of 25.0 mL of 1.0 M HBr and 35.0 mL of 1.0 M KOH produces 1.45 kJ of heat, what is the change in entalpy of HBr + KOH per mole of water formed
Indicate the hybridization for each carbon and nitrogen atom in this molecule, then draw an orbital overlap picture for the molecule.
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