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The human body obtains 955 of energy from a candy bar. If this energy were used to vaporize water at 100.0 , how much water (in liters) could be vaporized? (Assume the density of water is 1.00.)
Tell wheter each of the experimental errors in Exercise 3 will affect the melting point of the unknown component. If it will, tell how it will affect the melting point and explain why
What is the Vmax of this enzyme when enzyme concentration equal to 0.3 mg ml-1? b) When the above reaction was carried out in the presence of 2.5 ?M inhibitor, the Vmax is 0.03 M sec-1. What kind of inhibitor is this. Justify your answer with prop..
The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 7.60 mL of a 0.330 M HCl solution to the beaker. How much will the pH change? The pKa of acetic acid is 4.760.
What are the theoretical (stoichiometric) ratios of the reactants used in the condensation polymerization of phthalic anhydride and glycerol
NH3 is a weak base (Kb = 1.8 × 10-5) and so the salt NH4Cl acts as a weak acid. What is the pH of a solution that is 0.080 M in NH4Cl
Depending upon the conditions, potassium permanganate may form Mn(s), Mn^2+, or Mn^3+. Determine the number of electrons transferred and the equivalent mass of potassium permanganate for each condition.
An excited hydrogen atom emits light with a frequency of 1.141 multiplied by 1014 Hz to reach the energy level for which n = 4. In what principal quantum level did the electron begin?
If we inject 120.0 mL of liquid helium and allow the entire system to warm to room temperature (25°C), what is the pressure inside the bottle
The electrolysis of molten A12O3 at 980 ºC is used to produce metallic aluminum. A current of 658 A is used in the electrolysis cell. What is the rate of formation of aluminum, in kilograms per hour
determine the number of chloride ions in 11.73 g of magnesium
If a breakdown of the thermal insulation around the turbine allows a heat loss of 60 kJ per kg of stream, and the exiting steam is at 150oC and 0.3 MPa, what will be the power developed by the turbine if the inlet steam conditions and flow rate ar..
Show the product that forms when 3-phenylpropanal is allowed to mix with sodium hydroxide catalyst.
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