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What is the result of the following subtraction expressed with the correct number of significant figures: 20.15 ? 10.569?
9.5819.69.5830.72
Observe the following reactants and predict which of the following may form the potential products given the values for the energy of activation, , and enthalpy of the reaction, , in combination with the molecular orientation.
If the pressure is increased to 120 bar, the melting temperature increases to 375.88 K. Calculate DeltaHo fusion and Delta So fusion for this substance
In a concentration cell established using 0.150 M Ag+ solution and a saturated AgCN solution, the measured Ecell is 0.8520 V. Calculate the molarity of the Ag+ ion in the saturated solution.
A balloon filled with helium gas has a volume of 500 mL at pressure of 1 atm. The balloon is released and reaches an altitude of 6.5 km, where the pressure is 0.5 atm.
A mixture of NaCl, SiO2, and CaCO3 is separated following the procedure given in this experiment. Indicate how each of the following procedural changes would affect the amount of the specified substance recovered.
A 32.0-g sample of water at 290. K is mixed with 51.0 g water at 320. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
Carbon tetrachloride may react with oxygen to produce chlorine and carbonyl chloride.2CCl4(g) + O2(g) 2COCl2(g) + 2Cl2(g); Kc = 9.9 × 1051What is Kc for the following equilibrium?COCl2(g) + Cl2(g) CCl4(g) + ½O2(g)
Give the structure of a compound that has a formula of C6H12O and has a triplet (3H 1.1ppm), doublet (6H, 1.2 ppm), quartet (2H 2.4 ppm) and septet (1 H,2.7ppm ) in the 1H NMR spectrum? Please explain how you figured it out.
A 30.00 mL volume of a weak acid, HA, (Ka = 3.8 x 10^-6) is titrated with 39.00 mL of 0.0958 M NaOH to the equivalence point. What is the pH of the analyte solution before any base is added to it
Calculate How many mL of the HCl solution was required for the titration.
What is the freezing point of a solution of 8.69 grams of the electrolyte sodium acetate NaCH3COO dissolved in 15 grams of water?
We would like to make a buffer solution with a target pH of 8.44 (ignore activity). Suggest 3 conjugate acid/base pairs that could be used to make such a buffer.
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