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Pure gold can be made into extremely thin sheets called gold leaf. Suppose that 5.0 x 102 kg of gold is made into gold leaf having an area of 3620 m2. The density of gold is 19.3 g/cm3.a. What is the thickness of the gold leaf in cm? in nanometers?b. A gold atom has a radius of 1.44 x 10-10 m. How many atoms, stacked on top of each other, make up the thickness of the gold leaf?
What is the osmotic pressure of a homogenous solution at the temperature At 25 o C, as this solution is consisting of 21.0 g urea
flask shaken until the solution was uniform. A sample of 25.0 mL of this glucose solution was diluted to 0.500 ml then determine how many grams of C6H12O6 are in 100 mL of the final solution?
volumetric flask and this solution becomes quite warm, but after it is permitted to return to room temperature, H 2 O is combined to total 500 mili litres of solution. Compute the pH of the final solution. ?
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.
determines how many grams of glucose are in 100 mL of the final solution?
The average pH of precipitation in rural areas is 5.80. Assuming that the pH is controlled by the carbonate system, i.e., no anthropogenic acid gases are present in the atmosphere.
A student measures the standard enthalpy change for reaction (C2H4(g) + H2O(g) CH3CH2OH(g)) to be -52.8 kJ :Calculate the standard enthalpy of formation.
Write the balanced net ionic equations for the reactions that occur in each of the given cases as. Cr2(SO4)3(aq) + 3(NH4)2CO3 (aq) = Cr2(CO3)3 ( s) + 3(NH4)2SO4 ( aq).
For the concentration of hydroxyl radical of 7.5E06 molecules/cm3 and a carbon monoxide concentration of 18 ppm, calculate the rate of its reaction with atmospheric carbon monoxide at 11 degrees C.
The temperature of Beaker X = 75°C and the temperature of Beaker Y = 50°C after Five minutes . determine the temperatures be after another 5 minutes have passed?
What is the concentration of g salt per 100 g water of a saturated solution in which 3.82 g of salt are dissolved in 9.54 g of water?
The distribution coefficient, K= conc. in ligroin/conc. in water, between ligroin and water for solute A is 7.5. what weight of A would be removed from a solution of 10g of A in 100 mL of water.
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