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?

*will mark you brainliest + 15 points ** why does the equilibrium of a system shift when the pressure is increased? a. to maximize the stress on the system b. to stop restoring equilibrium to the system c. to increase the total moles of gas in the system d. to decrease the total moles of gas in the system

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

Explain how to convert from one unit to another in the metric system.