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a. what is used to measure volumes of liquid accurately? b. what is used to hold a stem funnel in filtration or a crucible and cover? c. what is used to support a clay triangle or a] wire gauze to the iron stand during heating?
Identify the orbitals to which a 4d electron may make an emission transition in the hydrogen atom and determine the dissociation energy of the molecule
A bomb calorimeter whose components have a heat capacity of 6.66 kJ/°C is filled with 913 g of water. (The amount of water is not constant from experiment to experiment.
If 25.0 mL of AgNO3 is needed to precipitate all the Cl- ions in a 0.795 mg sample of KCl(forming AgCl), what is the molarity of the AgNO3 solution.
What is the pH of a solution obtained by adding 75.0mL of 0.366M CsOH to 250.0 ml Ba(OH)2 solution with a pH of 11.65.
Concentration Units Conversions, Lethal concentration (50 percent kill): 2,485 mg/m3/4 hour... this is for a rat
Using a sample of CO 2 occupies a 2.54dm^3 container at STP. Determine the volume of the gas at a pressure of a temperature of 26.0 degree Celsius and 150.0 kPa?
What is the radius of the cross section of a cylinder that has a volume of 644.0 m3 and a height of 12.6 m? (Volume=πr2×height)?
A solution of 0.312 M KOH is used to titrate 15.0 mL of a H2SO4 solution. write the balanced chemical equation. what is the molarity of the H2SO4 solution if 28.2 ml of the KOH solution is required?
A volume of 95.0 ml of H2O is initially at room temperature (22.0 C). A chilled steel rod at 2.00 C is placed in the water. If the final temperature of the system is 21.1 C .
Calculate the pH of a buffer solution with .10 moles of C2H5COOH and .13 moles of C2H5COONa in 1.5L
Estimate the total calories in a slice of bread that has 9.0 g of carbohydrates, 2.0 g of protein, and 1.0 g of fat. What percentage of total calories is from fat?
Suppose that 25 g of each of the following substances is initially at 28.0degrees C. What is the final temperature of each of the following substances upon absorbing 2.35 kJ of heat.
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