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A 3.0 kg block of lead is taken from a furnace at 300 degrees Celsius and placed on ice at 0 degree Celsius. the specific heat of lead is 0.03 cals/J* degree C. If all the heat given up by the lead is used to melt the ice, how much ice is melted when the temperature drops to 0 degrees Celsius?
how many mL of chlorine gas are required to produce 0.50L of hydrogen chloride gas(HCl) at constant temperature and pressure?
Calculate the pressure when temperature is increased to 383 0C and volume of container keeps constant?
prepared by adding 45.0 mL of 0.15 M NaF to 35.0 mL of 0.10 M HF. What is the pH of the final solution?
Find the energy of a photon of light if the wavelength of the light wave is 6.88 x 10-7 m.
Predict the sign of Change in S for this reaction and explain. -Calculate the Change is S from standard molar entropy values. S for Na2O2(s) = 95 J/mol K
you have a hydrochloric acidsolution with a pH of 1.8. How many mL of sodium hydroxide with a pH of 11.8 would be used to neutralize 20.0 mL of the acid solution.
Determine how long will it take for the concentration to decrease to 0.13 mol/L express your answer in seconds.
Determine the number of CH2CH2 monomeric units, n, in one molecule of polyethylene with a molar mass of 40,000 g.
Calculate the work energy, w, gained or lost by the system when a gas expands from 15 L to 35 L against a constant external pressure
Calculate the concentrations of all species in a 1.10 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1=1.4x10^-2 and Ka2=6.3x10^-8.
When Fe(NO3)3 is dissolved in water, hexaaquiron(III) ions, Fe(H2O)6 3+, forms. Fe(H2O)6 3+ ions hydrolyze in aquesous solution accoring to the equation given below.
calculate the minimum volume of 1.00M HCL required to react completely with 5.00g of Ca ?
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