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- The substance oxygen has the following properties: normal melting point: 54.8 K normal boiling point: 90.2 K triple point: 1.50×10-3 atm, 54.4 K critical point: 49.8 atm, 154.6 K A sample of oxygen is initially at a pressure of 58.9 atm and a temperature of 96.9 K. The pressure on the sample is reduced to 1.50×10-3 atm at a constant temperature of 96.9 K. Which of the following are true?Choose all that apply The sample is initially a liquid. The gas initially present will solidify. The final state of the substance is a gas. One or more phase changes will occur. The final state of the substance is a solid.The density of trifluoroacetic acid vapor was determined at 118.1 °C and 468.5 torr, and found to be 2.784 g/L. Calculate K, for the association of the acid. 0-H...O 2CF,CO,H(g) = CF;C CF,C(g) O----H-OGiven Reactants: Sodium Hydroxide (NaOH) Potassium Permanganate (KMnO4) Glucose (C₆H₁₂O₆) Find the following: 1. Molecular equation 2. Total ionic equation 3. Net ionic equation
- A 35 mL of solution of hydrochloric acid is neutralized by 15 mL of 0.5 M potassium hydroxide. What is the concentration of hydrochloric acid? The balanced equation is HCI + KOH - H,O + KCI O 0.75 M O 0.25 M O 0.214 M O 0.786 MA solution contains 2.2 x 10 -3 M in Cu2+ and 0.33 M in LiCN. If the Kf for Cu(CN)42- is 1.0 x 1025 , how much copper ion remains at equilibrium?Given: 2KI +Pb(NO3)2 --> PbI2 + 2KNO3. How many grams of lead (II) iodide are produced if 0.250 moles of potassium iodide react completely? Group of answer choices 0.125 g 0.250 g 57.6 g 115 g
- Determine the mass of baking soda (84 g/mol) needed to completely react with 531mL of vinegar. Assume vinegar is 5% (m/m) acetic acid (60 g/mol) and the density of vinegar is 1.05 g/mL. O 38 g O 37 g O 40 g O 39 g 35 g O 36 gWhich statements are true regarding the chemical formula Pb(NO3)4. Select the three that apply. The formula unit has a ratio of four nitrate ion for every lead (IV) ion. Each Nitrogen atom is bonded with three oxygen atoms Formula unit contains more lead (IV) ions than nitrate ions. Each nitrate ion is bonded with four lead (IV) ions. Each formula unit has total of seventeen atomsYou are given a solution of 0.117 M NaOH solution. You need to neutralize 10.00 mL of the NaOH solution with an acid called KHP. The reaction is: KHP+ NaOH --> H2O + a salt If you are going to make up a KHP stock solution in a 100.00 mL Volumetric flask and use 14.137 mL of the KHP stock solution to neutralize the NaOH, what mass of KHP would you need to use? The molar mass of KHP is 204.22 g/mole