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A 102.5 g sample of metal beads was heated in a water bath to 99.5 degrees celcius. The metal was then added to a sample of water (25.7 g) and the temperature of the water changed from an initial temperature of 20 degrees celcius to a final temperature of 41.5 degrees celcius. What was the temperature of the metal at equilibrium? What was the temperature change of the metal? Calculate the specific heat and the atomic mass of the metal. What is the metal?
The nitrate concentration in an industrial effluent is determined using a nitrate ion selective electrode. Standards and samples are diluted 20-fold with 0.100 K2SO4 to maintain consatnt ionic strength.
Calculate the pH during the titration of 50.00 ml of 0.0500 M NaOH with 0.1000 M CH3CO2H after the addition of the following volumes
Write equations for the half-reactions that occur at the anode and cathode for the electrolysis of each of the following aqueous solutions.
Compounds of boron and hydrogen are remarkable for their unusual bonding and also for their reactivity. With the more reactive halogen
How much heat (in ) is required to warm 12.0 of ice, initially at -12.0, to steam at 114.0? The heat capacity of ice is 2.09 and that of steam is 2.01 .
sulfur dioxide is an unwelcome result of burning soft coal in power plants. Some of the sulfur dioxide ends up as sulfuric acid ( H2SO4) in acid rain.
We are given an unknown antacid pill and through the procedure in this lab we determine its cost effectiveness to be 5.0x10-1 mole of acid/$. Can we also determine the number of moles of base in the pill
The final temperature of the calorimeter is 24.4 °C. What is the specific heat capacity of the unknown metal. The specific heat capacity of water is 4.184 J/g-1 °C-1.
Question- What quantity of ethylene glycol, HOCH2CH2OH, must be added to 50 grams of water to raise the boiling point by 1.0 C
Determine the amino acid sequence from the data - Determine the amino acid sequence from the data.
If 50.00mL of 1.00 M HC2H3O2 Ka= 1.8x 10-5 is titrated with 1.00M NaOH. Explain what is the pH of the solution after the subsequent volumes of NaOH have been added
A solution is 89.8% by volume benzene(C6H6) in carbon tetrachloride at 20 degrees C. The vapor pressure of pure benzene at this temperature is 74.61 mmHg and it's density is 0.87865 g/cm^3;
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