Please help! When a 200.0 g block of iron is placed into 1500.0 g of water, the temperature of the iron increases by 50.0 °C. The specific heat of iron is 0.449 J/g^ C . What is the temperature change of the water? (0.715 C)
Thank you!

Explanation:

Hello there!

In this case, according to the given information, it is possible to realize that the heat relationship between iron and water is given by:

Which in terms of mass, specific heat and temperature is:

Thus, by solving for the change in the temperature of water we will obtain:

Which is negative because iron increases its temperature and therefore water decreases it.

Regards!

The Great Oxidation Event, sometimes also called the Great Oxygenation Event, Oxygen Catastrophe, Oxygen Crisis, Oxygen Holocaust, or Oxygen Revolution, was a time period when the Earth's atmosphere and the shallow ocean first experienced a rise in oxygen, approximately 2.4 - 2.0 Ga during the Paleoproterozoic era.
Occurred: 2,300 million years ago
Location: Earth