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0.2500 g of zinc reacts with 50.00 mL of 0.1000 M hydrochloric acid to yield hydrogen gas. (a) Identify the limiting reagent and calculate the theoretical yield of hydrogen gas in mols. (b) If the hydrogen produced in (a) is collected over water, calculate the total volume of hydrogen gas which would be collected at 760 mm Hg and 25 degrees celsius. (Hint: Will a second gas be present in the sample collected by water displacement?)
Calculate H per mole of CaCl2 (in kJ) for the reaction under the above conditions. Aside, the ?H per mole for dilution depends on the process.
atomic radius for Copper ,and assuming the atoms to be rigid spheres,
The excess I3 was titrated with 50.00 mL of a 0.02000 M Na2S2O3 solution. What was the mass percent of arsenic trichloride in the original sample?
Based on the sterochemistry of the addition of bromine to cinnamic acid, write the structure of the dibromide product(s) that you think will be formed as the result of the reaction of Z-2-pentene with bromine
"A student titrated a 10 mL sample of a saturated solution of borax. If the titration required 23.95 mL of 0.2556 M HCL to reach the endpoint, calculate the equilibrium molar concentration of B4O5(OH)(4 in the saturated solution"
what accounts for the large amount of ring strain in cyclopropane and cyclobutane? (Hint: what bond angle does an sp^y hybridized carbon prefer? What angles are necessary for each of the geometric shapes you are building?)
What is w when a gas is compressed from 38.3 L to 28.8 L using a constant external pressure of 745 mmHg
Sodium carbonate reacts with hydrochloric acid as shown below in an unbalanced chemical equation. What mass of CO2 is produced from the reaction of 2.94g Na2CO3 with excess HCL
What would be the diameter, in cm, of a uranium round shot which has exactly twice the weight as the iron ball described above? 1 pound = 0.4536 kg.
A gas sample has an original volume of 680 ml when collected at 720 mm and 28°C. What will be the volume of the gas sample if the pressure increases to 820 mm and the temperature increases to 55°C?
the molar heat of fusion is 6.02 kJ mol-1, obtain an expression in terms of A and D that gives the total heat needed to melt the block of ice if its temperature is the normal melting point.
Use the activity series to determine if a single replacement reaction can be seen to occur. If a reaction occurs, write the net ionic equation. a) Cobalt metal in a barium iodide solution b) Tin metal in a copper bromide solution
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