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1. Write a net ionic equation, including states for teh reaction of Cobalt (II) Chloride and Silver Nitrate
2. Circle the species in which nitrogen has the highest oxidation number
N2 NH3 HNO2 NO2- NANO3
3. Circle the compound that has the atom with the highest oxidation number?
CaS Na3N MgSO3 Al(NO2)3 NH4Cl
4. A 3.82g sample of magnesium nitride is reacted with 7.73 g of water.
Mg3N2 + 3H2O ------>2NH3 + 3MgO
The yield of MgO is 3.60g. What is the percent yield in the reaction?
5. Calculate the Heat of Reaction for the following reaction using Heats of Formation AND Bond Energies (using the tables and appendices in your book). Explain why there might be a difference in these calculated values.
2C6H6 (l) + 15O2 (g) -----> 12CO2(g) + 6H2O (l)
when most Fe+3 salts are dissolved in dilute nitric acid, the solution is often yellow to orange in color. Why could you not visually detect these colors in the Fe(NO3)3 stock solution?
She records the final temperature of the water as 317K. What is the value of Ccal (calorimeter constant) for the calorimeter.
Laboratory-grade diethyl ether contains small amounts of ethanol (1-2%). Is this grade of solvent suitable for the preparation
Hydrogen gas was cooled from 150C to 50 C. It's new volume is75 mL. What was it's original volume?
The solubility of oxygen gas in water at 25 °C and 1.0 atm pressure of oxygen is 0.041 g/L The solubility of oxygen in water at 3.0 atm and 25 °C is __________ g/L.
Calculate the pH of a buffer made with 0.50 M phosphoric acid and 0.75 M sodium dihydrogen phosphate. Ka = 7.5 x 10^-3
For methanol, CH3OH, the molar enthalpy of fusion is 3.16 kJ/mol at the melting point T=175.2 K. Calculate the freezing point depression constant,k, of methanol
Consider the base monosodium phosphate and Write the structure of the conjugate acid of this base- ineffective for extracting C7H6O2 from a diethyl ether solution.
Ammonium hydrogen sulfide decomposes on heating NH4HS(s) NH3(g) + H2S(g) If Kp for this reaction is 0.11 at 298 kelvins (with pressures in atmospheres)
a)Calculate the theoretical yield of when 109g of C2H6 reacts with 228g Cl2 of , assuming that and react only to form C2H5Cl and HCl .
We have a 100mL 0.2M AgNO3 solution and a 100mL 0.2M CH3COONa solution. Please describe how to prepare a 35 mL mixture solution containing 60mM AgNO3 and 140mM CH3COONa?
Compute the mass of an electron if the difference in the mass of 100 moles each of sodium atoms and sodium ions is 5.48002 grams?
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