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Determine the electronegativity between the atoms of each molecule. H2O, NH3, CH4, and CO2.
For the reaction what is the cell potential at 25 if the concentrations are 0.653 , 0.173 , and 0.852 and the pressure of is 6.80
When a 0.325 g sample was studied by combustion analysis, 0.583 g of CO2 and 0.0790 g of H2O formed. How many moles of each of the following were in the original sample
A 29.7 g mixture of the compounds magnesium oxide and potassium chloride is 57.7 % by mass magnesium oxide. The compound potassium chloride is 47.6 % by mass chlorine. Calculate the mass (g) of potassium in the mixture.
KCN is dissolved in water in a calorimeter that has a total heat capacity of 3.850 kJ·K-1, the temperature decreases by 0.280 K. Calculate the molar heat of solution of KCN.
at 298k 125 ml of 0.60 m potassium hydroxide koh is added to 175 ml of 0.40 m hydrochloric acid hcl. what is the final
How many grams of HCl are in a quart of muriatic acid? The muriatic acid density is 1.18 g/mL and is typically 36.5% HCl by mass.
in a student experiment the empirical formula of a copper halide was found by adding aluminum metal to an aqueous
air at 400kpa 970 k enters a turbine operating at steady state and exits at 100 kpa 670 k. heat transfer from the
You prepare a solution from 10.0 mL of 0.100 M MOPS buffer (3-morpholinopropane-1-sulfonic acid) and 10.0 mL of 0.078 M NaOH. Next, you add 1.00 mL of 7.81 × 10-6 M lidocaine to this mixture
If 250.0 mL of 0.354 M Phosphoric acid need to be prepared, how many grams of H3PO4 need to be added to water to make this solution
The solubility of slaked lime, Ca(OH)2, in water is 0.185g/100mL. What volume of 0.00250 M HCl is needed to neutralize 11.0mL of saturated Ca(OH)2 solution
Determine the structure of compound U. Be sure to include a concise discussion of the reasoning. Construct tables summarizing the IR and 1H NMR data, and assign the peaks in the IR and NMR spectra to the appropriate structural elements in U. Expla..
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