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Pick the words that correctly finishes the following sentence. A reaction will always be spontaneous if it is and there is an increase in disorder of the system. exothermic or endothermic
How many hemoglobin molecules are there in an average red cell? Assume that the molecular weight of the human hemoglobin tetramer is 65 kd. (The answer is 2.74x10^8, but I don't know how to calculate it)
Select the strongest interparticle force(s) present in Mg3N2.
A bicycle tire is filled with air to a pressure of 95.0 psi at a temperature of 19 degrees celcius. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58 degrees celcius. The volume of the tire increases by 4.0%. What..
How many grams of F2 are needed to produce 237 g of PF3 if the reaction has a 80.4% yield?
solution of potassium sulfate. Assuming that all ionic species are completely dissociated, what is the osmotic pressure of the mixture in torr?
calculate the difference in mass that is hold by a 500.0mL flask at a temperature of 0.0°C from that at temperature of 20.0 °C? (you can assume the volume of the sample at 0.0 °C temperature =volume of the sample at 20.0°C)
Why does benzyl alcohol, a primary alcohol, react rapidly in the presence of HCl to form benzyl chloride? If it's primary, shouldn't the reaction be slow?
Consider the reaction of 5.0 moles of CS2 and 3.0 moles of NaOH according to the following reaction 3 CS2 + 6 NaOH -> 2 Na2CS3 + Na2CO3 + 3 H2O.
what is the molar mass of a sample of gas that has a dnesity of 1.09 g/L at 1.02 atm pressure and 25.0C.
A 28.0-g sample of water at 250. K is mixed with 47.0 g water at 300. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
A 150.0-g sample of a metal at 75.0 °C is added to 150.0 g of H2O at 15.0 °C. The temperature of the water rises to 18.9 °C. Calculate the specific heat capacity of the metal, assuming that all the heat lost by the metal is gained by the water.
an airplane is pressurized to 650 mmhg. The partial pressure of oxygen is 137 mmhg. If the partial pressure of oxygen drops below 100.mmhg.
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