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question-if start with 93 gr of li how may grams of h2 can you makenbspli h20 ----gt lioh h2if it starts with 34 mols of h2o how many mols of h2
nbspa solution of 0100 m acetic acid is prepareda what is its ph value b if 20 of the initial acetic acid is converted to the acetate form by
write the structures of the major product saytzeff elimination when the following alcohols are dehydrated with hotconcentrated sulphuric acid 1
1 prior to placing a 5158 g piece of metal into the graduated cylinder the level was 50 ml after adding the metal the observed level was 51 mlnbsp
A total of 2.00g of a compound is allowed to react in a foam coffee cup that contains 158 of water. The reaction caused the temperature of the water to rise from 21.0 to 24.7 . What is the enthalpy
A voltaic cell is constructed with a Ag/Ag+ half-cell and a Cd/Cd2+ half-cell. The silver electrode is positive. Write balanced half-reactions and the overall reaction. Draw a diagram of the cell,
Which of the following statements describes the behavior of the system if the partial pressure of chlorine is reduced by 50%?
A compound containing carbon & hydrogen atoms has a deep blue color. Complete combustion of 288 mg of the compound produces 0.991 grams of carbon dioxide & 162 mg of water. What is the empir
Consider the expansion of one mol of a monoatomic gas initially at 300 K and 10 atm. The expansion to a final pressure of 1 atm occurs in four different ways:
A solution is prepared by mixing 50.0 mL of 0.24 M Pb(NO3)2 with 50.0 mL of 1.6 M KCl. Calculate the concentrations of Pb2+ and Cl - at equilibrium. Ksp for PbCl2(s) is 1.6 multiplied by 10-5.
Suppose a chemical engineer studying a new catalyst for the Claus reaction finds that liters per second of dioxygen are consumed when the reaction is run at and . Calculate the rate at which sulfur
An equilibrium mixture of H2 ,I2 and HI at 458 contains 0.108 I2 0.108 H2 , and 0.747 HI in a 5.00- vessel What is the equilibrium partial pressure of when equilibrium is reestablished following the
Explain how alkene/aromatic C-H stretches are distinguished from alkane C-H stretches. Do the C-H stretch peaks in the IR spectra of triphenylmethanol.
Assume that a reaction takes place at 295 K and 305 K. What must the activation energy be for the rate constant to double as described?
Consider the following unbalanced reaction. What mass of F2 is needed to produce 175 g of PF3 if the reaction has a 84.5% yield?
if the vinegar were measured volumetrically (eg, a pipet), what additional piece of data would be needed to complete the calculations for the experiment?
If 5.25mL of 0.1000 M NaOH solution is needed to just neutralize excess acid after 20.00 mL of HCl was added to 1.00 g of an antacid, how many moles of acid can the antacid counteract per gram?
A reaction of clacium phosphate and sulfuric acid results in calcium sulfate and phosphoric acid. If 250 grams of calcium phosphate react with 3 mol of sulfuric acid will 3 mol of calcium sulfate b
A 1.30 M solution of citric acid (H3C6H5O7) in water has a density of 1.10 g/cm3. Calculate the mass percent, molality, mole fraction, and normality of the citric acid. Citric acid has three acidic
A solution is prepared by adding 30.00 g of lactose (milk sugar) to 110.0 g of water at 55 °C. The partial pressure of water above the solution is __________ torr. The vapor pressure of pure wa
Calculate the change in Gibbs energy (b) Is the reaction spontaneous? (c) Calculate the total change in entropy of the system and the surroundings.
A strip of electrolytically pure copper weighing 3.178 gram is strongly heated in a stream of oxygen until it is all converted to a black oxide. The resultant black powder weighs 3.978 g. What is th
Which of the following substances (with specific heat capacity provided) would show the greatest temperature change upon absorbing 100.0 J of heat?
A student who carried out this reaction obtained 2.7 g of ferrocene. What was the percent yield for this reaction?
90-g sample of a large biomolecule was dissolved in 23.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule.