1. A mixture of two gases with a total pressure of 2.34 atmcontains 0.70 atm of Gas A. What is the partial pressure of GasB?2. At 25.0 ° C, a 10.00 L vessel is filled with 5.25 molesof Gas A and 6.05 moles of Gas B. What is the total pressure?3. At 25.0 ° C, a 10.00 L vessel is filled with 8.00 atm of GasA and 7.89 atm of Gas B. What is the mole fraction of Gas B?4. A 20.0 L container at 303 K holds a mixture of two gaseswith a total pressure of 5.00 atm. If there are 2.64 mol of Gas Ain the mixture, how many moles of Gas B are present?5. In a 4.00 L pressure cooker, water is brought to a boil. Ifthe final temperature is 115 °C at 3.25 atm, how many moles ofsteam are in the cooker?6. A sample of 6.00 mol of gas in a 10.00 L container is at45.0 °C. What is the pressure of the gas?7. A weather balloon calibrated at 0.00 °C to have a volume of20.0 L has what volume at -30.5 °C assuming pressure is heldconstant?8. A balloon is filled to a volume of 1.50 L with 3.00moles of gas at 25 °C. With pressure and temperature held constant,what will be the volume of the balloon if 1.70 moles of gas areadded?
3. A 0.7026 g sample of an unknown, monoprotic acid required40.96 mL of a .1158 M NaOH for neutralization, but was slightlyover titrated. There were 1.22 mL of 0.1036 M HCL used for backtitrationa, How many moles of OH- were used? ______ mol OH-b. How many moles of H+ were used from the HCl? _______ molHClc. How many moles of H+ were there in the unknown acid? _______mol H+d. What is the molar mass of the unknown acid? _______ g/mol
The pKa for the acid dissociation reaction of bicarbonate is 10.33.HCO3-(aq) + H2O(l) ⇌ CO32-(aq) + H3O+(aq)Imagine that your goal is to prepare a buffer with pH 9.84 using 29.4 mL of 0.100 M sodium bicarbonate solution and solid sodium carbonate. What mass of sodium carbonate must be dissolved in the solution to achieve the target pH? Enter your response without units in milligrams (mg) to the nearest 0.1 mg.
The reaction of lithium metal and water to form lithium hydroxide and hydrogen gas is represented by the following balanced chemical equation:2Li (s) + 2H2O (l) → 2LiOH (aq) + H2 (g)When Li is mixed with excess water, 0.30 mol of H2 gas is isolated in the laboratory. If this reaction occurs to give an 85% yield of H2, how many moles of Li reacted?
Part A: An intravenous solution to replace potassium loss contains 40 mEq/L each of K+ and Cl−. How many moles of K+ are in 1.9 L of the solution? Express the number of moles to two significant figures.
Part B: How many moles of Cl− are in 1.9 L of the solution? Express the number of moles to two significant figures.
Within a neuron, information flows in the followingdirection:a. axon, cell body, terminal, dendritesb. terminal, axon, dendrites, cell bodyc. dendrites, cell body, axon, terminald. cell body, dendrites, terminal, axon