How much heat energy is needed to change 95 g of water at 25^circ C into steam at 100^circ C ? Use 4.2(J)/(gcdot ^circ )C for the specific heat of water. Use 2260J/g for the heat of vaporization of water. (1 point) 2.1times 10^5 3.0times 10^4 1.8times 10^4 2.4times 10^5

Question

Answer 1

Here's how to calculate the total heat energy required:**1. Heating the water from 25°C to 100°C:*** Temperature change:

* Mass of water:

* Specific heat of water:

* Heat required (Q1):

**2. Vaporizing the water at 100°C:*** Mass of water:

* Heat of vaporization:

* Heat required (Q2):

**3. Total heat required:*** Total heat (Q):

Since the answer choices are given in scientific notation, we can express this as

. Rounding to two significant figures, we get

.Therefore, the correct answer is

.

Question