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How many grams of PBI2 will precipatate by the addition of excess KI solution to 50.00 mL of 1.22 M Pb(N03)2
Compute the vapor pressure at the temperature of 25 degree Celsius of H 2 O above a solution formed by mixing 100.
A distance of 200 ft must be taped in a manner to ensure a standard deviation smaller than ± 0.03 ft. What must be the standard deviation per 100 ft tape length to achieve the desired precision?
Calculate the wavelength in nanometers of the spectral line in the visible spectrum of hydrogen for which n1 = 2 and n2 = 3. What color is this line?
Question : Explain and show how you would sythesise the following compounds, starting with benzene or toluene and any necessary acyclic reagents. Assume para is the major product.
What is the de Broglie wavelength of a 145 g baseball traveling at 30.0 m/s (67.1mph)? Is the wavelength much larger or smaller than the diameter of an atom .
Hardness in groundwater is due to the presence of metal ions, primarily Mg2+ and Ca2+. Hardness is generally reported as ppm CaCO3 or mmol/L Ca2+.
Ammonia is often produced by reacting nitrogen gas with hydrogen gas. How many liters of ammonia gas can be formed from 23.5 L of hydrogen gas at 93.0°C and a pressure of 34.7 kPa?
PCl5 + 4H2O > 5HCl +H3PO4. How many total moles of acid are formed when starting with 4.5 g of PCl5 and excess H2O.
What will be the average atomic mass of element A if percentage abundance of these two isotopes are 48.17 % and 51.83 % respectively. ?
What time will it take 10.0 mL of Chlorine gas to effuse through a porous barrier when it has been noticed that 76.3 min are needed for 10.0 mL of Hydrochloric acid gas to effuse through the same barrier.
Determine the numbers of oxygen molecules are required for each molecule of C 6 H 12 O 6 glucose that is oxidized if Glucose is oxidized by molecular O 2 to CO 2 and H 2 O?
The temperature of a sample of water increases from 21.9°C to 45.3°C as it absorbs 5669 J of heat. What is the mass of the sample.
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