Why are there so many volcanoes in and around japan

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

What is the value of the standard enthalpy of formation of an element in its most stable form?

Scientists often deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each of these numbers in an alternate form.