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CH2 CH2 reacts with hydrogen gas to give CH3CH3 you need to Estimate the heat released when Bond enthalpies are H H : 436 kJ/mol., C C : 612 kJ/mol; C Br : 276 kJ/mol; C H : 412 kJ/mol; C C : 348 kJ/mol;
compute the number of mol of S represented by 1.810 x 10 -27 atoms of S, also determine the number of atoms of sulfur in 5.22 x 10 -7 kilograms of sulfur.
Calculate how many calories of heat are needed to increases the temperature of 550 grams H2O from 12 degree celsius to 18 degree celsius?
Compute How many mg of the compound P do you have in 20ml of 4% (w/v) solution of P
What will be the average atomic mass of element A if percentage abundance of these two isotopes are 48.17 % and 51.83 % respectively. ?
How would you expect a titration curve of both the solutions and what will happen if HCl is added to the H 2 O and sodium acetate buffer ?
Calculate the number of bromine molecules present in the flask if A flask contains 0.350mol of bromine, Br2 in liquid form .
The vapor pressure of water is 28.3 torr at 29°C then determine what is the partial pressure of oxygen collected if a reaction at that temperature produces Carbon Dioxide which is collected over water at a total pressure of 576 torr, ?
Understanding of Chemistry basics - explain a situation that violates the second law of thermodynamics?
Determine what is the observed rate for the given reaction - empirically determined rate
It is given that the v.p. of water =233.7 mm Hg.at 70 degree Celsius then calculate the vapor pressure? express your answer in mm Hg ?
Determine the molar concentration of chloride ions after adding 225 ml of 0.625 MKCL with 615 ml of 0.385M MgCl2 if final volume of the solution is 840ml.
Using a sample of 30.0 mL of Kr(g), is at 25°C and 756 mmHg. Calculate the new volume if the temperature is decreased to -125°C and pressure is decreased to 325 mmHg .
Explain what health risks may arise people use this hot water in the preparation and cooking and what is the equilibrium constant for this reaction
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