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In order to recognize the solute in an organic solution, the spectroscopic analysis was carried out, determining that the solute represents 5% by weight and also the centesimal composition of said solute is 40% C, 53.3% O; 6.7% H and its atomicity is 8. If said solution has a density of 1.08 g/ml, what is the molarity of said solution?
Suppose you were instructed to add 38 g of sodium chloride (NaCl) to 100 mL of water. a. prepared as instructed at 20°C b. heated the mixture in (a) to 100°C
A 1.00-mol sample of an ideal monatomic gas is compressed isothermally and irreversibly in one step from 2.50 atm to 6.50 atm at 300.0 K. Calculate G for this process
A buffer solution contains 0.5 M HA pka=8 and 0.25M NaA. What is the pH after 0.1 mol of HCL is added to this solution, giving a total final volume of 2L
Calculate the minimum number of grams of propane,C3H8 (g) , that must be combusted to provide the energy necessary to convert 3.15kg of ice at -15.5degC to liquid water at 75.5degC. C3H8 (g)
The radius of a gold atom is 144 pm. How many gold atoms would have to be laid side by side to span a distance of 2.63 mm?
Calculate w (in kJ) when 557 g iron (III) oxide (MM = 159.7 g/mol) reacts with excess carbon to produce carbon dioxide gas at 420 K: 2Fe2O3(s) + 3C(s) ? 4Fe(s) + 3CO2(g)
a mixture of HCOOH and H2C2O4 is heated with conc. H2SO4 . The gas produced is collected and on treating with KOH solution the volume of the gas decreses by 1/6 th . calculate molar ratio of two acids in original mixture.
We wish to lower the freezing point of the water in an automobile radiator to -40 C. The total mass of water present is 12.0kg. For which one for the following compounds would we have to use the greatest mass of solute to achieve this
A scientist measures the standard enthalpy change for the following reaction to be -1053.4 kJ : 2H2S(g) + 3 O2(g) 2H2O(g) + 2 SO2(g) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of fo..
For each of the following mechanisms, draw a reaction diagram that is appropriate for the number of steps, the relative rate of each step as well as whether each step is endothermic or exothermic. Find out the rate law for each mechanism.
What is the molar mass of this substance, express your answer in g/mol and determine the moloar concentraitions Cr 2 O 7 ^2 and of K + ?
What would the solubility of copper (II) tartrate be in a solution that contains 0.12 M sodium tartrate?
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