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An ice cube at 0.00 degrees Celsius with a mass of 4.52g is placed into 55g of water, initially at 23 degrees Celsius. If no heat is lost due to surrounding, what is the final temperature of the entire water sample after all the ice is melted? (Specific heat of water is 4.184 J/g • degrees Celsius)
A 4.0L sample of N2 (g) at 760 mmHg is compressed, at constant temperature, to 3.2atm. What is the final gas volume
Combustion of 19.81 mg terephthalic acid produces 41.98 mgCO2 as well as 6.45 mg H2O. If 0.315 mol of terephthalic acid has a mass of52.3 g find out the molecular formula for terphthalic acid.
For the unbalanced equation Cl2 ++ KI = I2 + KCl - how many moles of the second reactant would be require to react exactly with the 0.275 mole of the first reactant
A 6.5g sample of diprotic acid requires 137.5mL of a .75M NaOH solution for complete neutralization. Determine the molar mass of the acid.
Depict the best possible Lewis structure of methyl cyanide. b) Forecast the geometry and hybridization of each carbon atom. c) Explain the bonding in this molecule in terms of sigma (s) and/or pi (p) bonds and the orbitals
Use the Ksp values to calculate the molar solubility of each of the following compounds in pure water.
In this experiment you utilized yellow colorimetric guide to establish the end of the reaction. Would you wait for to get the same value of the activiation energy if red was chosen rather than yellow
This time took a one-hour break after adding the acetic anhydride but before adding the sodium acetate solution. The student obtained no product. Explain, with chemical equations and/or formulas, what went wrong.?
Calculate the heat required to convert 58.0 g of C2Cl3F3 from a liquid at 14.90 degrees C to a gas at 90.75 degrees C.
two scientists are experimenting with pure samples of isotope x a highly radioactive substance. the first scientist has
What is the pH of a solution resulting from the addition of 11.9 mL of 0.20 M HCl to 50.0 mL of 0.12 M NH3? Assume the volumes are additive. Kb of NH3 = 1.8 10-5.
At 580nm, the wavelength of its maximum absorption, a 3.75 x 10^-5 M solution of the complex FeSCN2+ has an absorbance of 0.2734 in a 1.00cm cell. What is the molar absorptivity of the FeSCN2+ complex at 580nm
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