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Problem- Calculate the concentrations of (a) the molality of hydroxide ions in a solution prepared from 3.24 g of barium hydroxide dissolved in 258 g of water; (c) the molality of 12.00 M NH3 (aq) with a density of 0.9519 g/cm^3
I require expert help to solve the above question. Illustrate each and every step.
Problem- Which of the following compounds exhibit at least one bond angle that is approximately 120o? Select "true" if the molecule has a bond angle of approximately 120o. Otherwise, select "false".
Calculate the change in entropy when the pressure of 3.44 g of helium gas is decreased from 125.0 kPa to 65.0 kPa while the temperature decreases from 335 K to 273 K. Assume ideal behavior.
A hot-air balloon has a volume of 875L. What is the original temperature of the balloon if its volume changes to 955L when heated to 56 degrees celsius
Somebody puts an expandable balloon on the opening of the bottle, without any gas escaping. The outside pressure is 1.10atm and the temperature has decreased to 25.8 degree celsius. Calculate the new volume of the gas.
Write balanced net ionic equations for the following reactions in basic solution. Express your answer as a chemical equation. Identify all of the phases in your answer.
Many gaseous reactions occur in a car engine and exhaust system. One of the reactions is NO2(g)+CO(g)-->NO(g)+CO2(g). Given the following information determine the overall rate order. Rate=K[NO2]^m [CO]^n
Depict a Lewis structure for urea, {{H}}2 {{NCONH}}2, Define the compound primarily responsible for the smell of urine. Define the central carbon atom is bonded to both nitrogen atoms and to the oxygen atom.
What is the final temperature after 336J of heat energy is removed from 25.0g of Water at 19.6C
calculate the sodium ion concentration in a solution formed by diluting 35.00 mL of a .585 M sodium phosphate solution to a final volume of 145.00 mL
An aqueous solution containing 7.29 g of an optically pure compound was diluted to 500.0 mL with water and placed in a polarimeter tube 15.0 cm long
Actually, whether these collisions are elastic or inelastic makes no difference as long as the walls are at the same temperature as the gas. Explain.
describe an incident fire spill explosion etc you have experienced or research one on the internet professional journal
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