college physics
A 215 g sample of a substance is heated to 330 degrees C and then plunged into a 105 g aluminum calorimeter cup containing 165 g of water and a 17 g glass thermometer at 12.5 degrees C. The final temp is 35.0 degrees C. What is the specific heat of the substance?
Geology
If 1.0 half life passed, it would be 600 million years. If 0.1 half life passed, it would be 60 million years. Since 0.5 half life has passed, it is 300 million years old.
Chemistry
The weak base-conjugate acid buffer used in this laboratory consists of a weak base ammonia, NH3, and its conjugate acid ammonium chloride, NH4Cl. If the NH3 concentration is 0.05 M and the NH4Cl concentration is 0.05 M, what is the pH of the buffer? Kb for NH3 is 1.8*10^-5
english1
Ignore the others it is b you are right. I am an english teacher so I think I should know.
Principles of Accounting
here is the assignment I was asking about,but How do I get it in here? I tried copy and paste but didn't work
Principles of Accounting
I want to know if I am on the right track to completing this assignment,accounting is very hard for me to understand.This is textbook assignment chapter 5 p26a.journalizing transactions supplier/retail business.(principles of accounting by meg pollard)the course name is ACC 11...
Biology
Which of the following is probably the main factor responsible for the phenomenon of density-dependent inhibition?
CHEM HELP
E was wrong
SOCIAL STUDIES
the characteristics was that they were smart and the renaissance was a good time
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