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0.015 g of finely powered Mg(s) are added to 10.00 mL of 1.042 M HCl in a well of a Styrofoam block calorimeter with Kcal= 5.9 J/oC. The temperature of the acid solution increases from 24.2 oC to 29.9 oC. Calculate deltaH for the reaction that occurred.
a. -386 kJ/molb. -238 J/molc. -272 J/mold. -26.1 kJ/mole. -441 kJ/mol
At 8:00 a.m., a patient receives a 58-mg dose of I -131 to obtain an image of her thyroid. If the nuclide has a half-life of 8 days, what mass of the nuclide remains in the patient at 5:00 p.m.
A solution is made by adding 50.0 mL of ethanol (C2H5OH, d = 0.789 g/mL) to 50.0 mL of water (d = 0.998g/mL). What is the total vapor pressure over the solution
Which radio station broadcasts at a longer wavelength: 93.9 FM or 104.3 FM? To support your answer, list the actual wavelength values and units for each of these radio stations.
what mass of CH3CO2H is required to prepare 100.00ml of a 0.48M acetic acid solution?
What is the estimated mass of the osmotic pressure of a polymer dissolved in benzene to give 200 mL of solution is 1.50 kPa at 25 degrees C.
Hydrogen gas is collected at 29 c the total pressure of the system is 773 torr. If the vapor pressure of water at 29c is 30 torr what is the partial pressure of the hydrogen gas?
Suppose in the lab you measure 0.3951 g of NaOH and dissolve it into 100.0 mL of water. You then measure 0.1985 g of KHP and place it in a clean, dry 100-mL beaker, and then dissolve the KHP in about 25 mL of water and add a couple of drops of phe..
total molarity of acid and conjugate base in this buffer. A boy mixes 5.70mL of a 0.330M Hydrochloric acid solution to the beaker. Determine the pH change if The pKa of acetic acid = 4.760.
A .750 L volume of gas at 308.0 torr and 51.00 degrees C is heated until the volume of the gas is 2.000L at a pressure of 718 torr. What is Tfinal of the gas?
If 20.0 mL of 0.12 M cobalt(II) nitrate is reacted with 15.13 mL of 0.097 M sodium phosphate, which of the two reactants will be left over and which will be completely consumed.
What volume of Cl2 gas, measured at 682 torr and 40 degrees celcius, is required to form 26 g of NaCl ?
Propose a neutral structure for each compound that is consistent with the data. Note that the absolute stereochemical configurations of chiral substances cannot be determined from the data. Arbitrarily draw a configuration for an enantiomer (and b..
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