What is the final temperature of the salt solution
50.0 g of KCl at 27.0 °C is dissolved in 100. mL of 27.0 °C water in a coffee cup calorimeter. What is the final temperature of the salt solution? Assume that the heat capacity of the solution is 4.184 J/g·°C
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Ethanol, is added to gasoline to produce E85, a fuel for automobiles engines. How many grams of O2 are required for complete combustion of 421g of ethanol ? When C2H5OH +3O2 produces 2CO2 + 3H2O.
Why was printing and publishing books and music so profitable in the Renaissance? How was information transmitted before printing was invented?
A closed organ pipe 0.8 m long has a diameter of 7.0 cm. The air in the church is 15oC. What is the speed of sound at 15oC?
A Federation starship (1.0 106 kg) uses its tractor beam to pull a shuttlecraft (1.0 104 kg ) aboard from a distance of 8 km away. The tractor beam exerts a constant force of 4.0 104 N on the shuttlecraft. Both spacecraft are initially at rest. Ho
A box of textbooks of mass 24.7 kg rests on a loading ramp that makes angle a with the horizontal. The coefficient of kinetic friction is .25 and the coefficient of static friction is .37. Find the minimum angle at which the box starts to slip.
Assuming the solution has a heat capacity of 4.18 J/°C·g and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol.
A block hangs in equilibrium from a vertical spring. When a second identical block is added, the original block sags by 7.00 cm.What is the oscillation frequency of the two-block system?
What volume in mL will a sample of F2 occupy in a syringe at 5.5 atm , if the F2 has a volume of 25.0 mL at 1.2 atm?
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Outline a social issue that is important to you. Describe why it is important to you, why it is important from a societal perspective and how you think
What is another way to say ". It is important to ensure that the youth understand what the study involves, what their participation entails
Question: Jena and Ben are employees of Big City Electronics. They began to have a consensual sexual relationship.
Based on information provided in Ch. 11 & 12, how do you define "being an adult"?
Working in the yard, you feel unpleasantly hot and sweaty when you come in the house, so you take a shower and begin to feel better.
Examine historical literature to the most current period to see the growth of romanticism and EXISTENTIALISM. any major developments
In our readings, we learn more about the nature versus nurture argument. For this discussion, I want you to go in depth a bit more and debate the importance