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Did an experiment where we extracted the caffeine in 1 bag of tea. We added the bag of tea leaves to the solution where the sodium carbonate solution. Explain what the purpose of adding the sodium carbonate was.
Nitrogen and oxygen gases react to form dinitrogen trioxide gas. 2 N2(g) + 3 O2(g) -> 2 N2O3(g) At a certain temperature and pressure 4.2 L of N2 reacts with 6.3 L of O2.
Isotope 1 has a mass of 120.9038 amu and a relative abundance of 57.4%, and isotope 2 has a mass of 122.9041 amu. What is the atomic mass of this element?
The temperature of a 2.25 L sample of gas decreases from 35C to 20C. What is the new volume?
What is the purpose of the gas trap in the reaction set-up? (Hint: What gas(es) are present?What are their safety issues?)
Thermodynamic Processes. a volume of 20 cu ft of air at pressure of 50 psig is heated and expanded to 30 cu ft and 40psig find the change in the energy of air in joules.
What pressure will the evolved carbon dioxide produce when 184.5g of calcium carbonate decomposes in a 20.00L container at 22.4 deg celsius?
A sample of methane (CH4) has a volume of 25 mL at a pressure of 0.80 atm. What is the volume of the gas at each of the following pressures if there is no change in temperature? a) 0.40 atm; b) 2.00 atm; c) 2500 mmHg; d) 80.0 torr.
Calculate the volume of N2 produced at 21 degrees C and 823 mmHg if 60.0 g of sodium azide reacted
calculate the molarity of acetic acid in a vinegar sample knowing that 5.00 mL of vinegar requires 43.50mL of 0.105M NaoH to just reach the phenolphtalein endpoint in a tritration
A bag of potato chips contains 580 mL of air at 25°C and a pressure of 755 mm Hg. Assuming the bag does not break, what will be its volume at the top of a mountain
How many moles of (NH4)3PO4 are present in 100.0 mL of 2.50 M (NH4)3PO4?
What is the molarity of a solution prepared by dissolving 11.5g of solid NaOH in enough water to make 1.50L of solution?
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