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Uses of de-Broglie equation in electromagnetic specra.
a. What is the utmost wavelength of energy needed to observe a photoelectric effect for potassium?
b. What is the corresponding colour of light of this wavelength?
At a particular location in a countercurrent stripper for the removal of solute A from a liquid stream, the mole fraction of the transferring species A in the bulk gas phase is 0.01, and the mole fraction of solute A in ...
Determine the percent yield of barium sulfate obtained (4.9852g) when 100.0 mL of a 0.2516M aqueous barium chloride is treated with an excess of sulfuric acid? Hydrochloric acid is a by-product.
What is the molarity of 2.00 L NaOH Solution prepared from the dilution of 50.00 mL of 19.1 M NaOH?
1) What is the mass of 38 molecules of SO 3 in g? 2) What volume in L of chlorine at 30 o C and 743 torr is required to react completely with 4.76 g aluminum: 2Al(s) + 3Cl 2 (g) → 2AlCl 3 (s) Calculate the moles chlorin ...
An empty 100-mL measuring cylinder weighs 132.456 g. When filled with rice to the 100-mL mark it weighs 220.345 g. After water has been added to fill the spaces between the grains, the weight is 250.123 g. What is the ...
Dr. Pepper has 40.0g of sugar per 12 oz. of liquid. Calculate the molarity of this solution. Put that molarity into your regression line and calculate the density (all other things being equal) of this sugar solution. Sh ...
1. When H2 gas was released by the reaction of HCl with Zn, the volume of H2 collected was 66.0 mL at 26 °C and 750 mmHg . A. What is the volume of the H2 at 0 °C and 1.00 atm pressure (STP)? 2. Express the temperature n ...
At 518°C, the rate of decomposition of a sample of gaseous acetaldehyde, initially at a pressure of 363 Torr, was 1.07 Torr s-1 when 5.0% had reacted and 0.76 Torr s-1 when 20.0% had reacted. If the reaction rate is prop ...
Aim - To understand the fundamentals of atomic structure, chemical bonding, periodic tableandits application in engineering problems - Objective - Observing and explaining the reasons of engineering chemistry related pro ...
Identify the chemical components and the proportions necessary to achieve a buffer with the desired pH. Include relevant calculations in your answer.
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