A 1,500 g iron horseshoe at 800˚C is dropped into a bucket of water that is 20˚C. If the mass of water in the bucket is 5,000 g, what is the final temperature of the water-iron mixture, given specific heat of iron = 0.444 J/g˚C and specific heat of water = 4.186 J/g˚C?

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

Ahydrogen atom has 1 electron. how many bonds can hydrogen form? a) 1 b) 2 c) 3 d) 4 e) 5

Which are examples of how technology has advanced scientific understanding.1using hot water to sterilize medical equipment.2transplanting a human organ into another individual.3inserting genes from one sheep into another cell to make a cloneunderstanding the different structures that make up a cell.4examining microorganisms from the deepest parts of the ocean