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Referring to Fig. 6.12, indicate over how many squares the sound waves would spread for r 5 m. The sound intensity would decrease to what fraction in value?
How many mL of H2O should be added to 30 mL of a four Molarity solution to obtain a solution with a concentration of 0.200 Molarity
Explain the various steps in a free radical mechanism using the reaction of methane with Bromine (g) to form bromomethane and hydrobromic acid as an example
Explain the factors that affect rate and relative reactivity. Use a mechanism(s) and reactions to support your claims.
2.58g of a gas has a volume of 3.97L at 745mmHg and 21 degrees celcius. What is the molecular weight of the gas?
a solution is prepared by dissolving 6.00g of unknown nonelectrolyte in enough water to make 1.00l of solution. the
Write the total and net ionic equations for the reaction of BaSO4 dissociation, and calculate the trial Ksp for the product formed, when 40 mL of 0.1 M Ba(CH3COO)2 reacts with 60 mL 0.6 M MgSO4 and decide whether a ppt will form
A compound with the formula C5H12 gives one signal in the proton NMR spectrum as well as 2 signals in the carbon NMR spectrum.
human growth hormone in 25.0 mL of solution has an osmotic pressure of 0.109 torr at 25.0°C. What is the molar mass of human growth hormone?
A traveling wave is produced on a rope. The wave travels until it hits a wall and it is reflected. If the speed of the wave is 1.8 m/s and it takes 6.5 s to get back to the starting point, how long (m) is the rope. Round to two decimal places, do ..
For your cereal sample, you added the same volume of sodium acetate that you added to your standards and solution unknown. b) You forgot to add hydroxylamine hydrochloride when you prepared the standards
Describe the color change of a positive Benedicts test and What group reacts with the Benedicts reagent
The heat combustion of acetylene, C2H2(g), at 25°C, is -1299 kJ/mol. At this temperature, ?H°f values for CO2(g) and H2O(l) are -393 and -286 kJ/mol
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