If 150 grams of water is to be heated from 15.0°C to 100°C to make a cup of tea, how much heat must be added? The specific heat of water is
4.18 J/gºC *

53295J

Explanation:

The amount of heat to be added can be calculated using the formula:

Q = m × c × ∆T

Where;

Q = amount of heat (J)

m = mass (g)

c = specific heat capacity of water

∆T = change in temperature (°C)

According to the provided information, m = 150g, c = 4.18 J/gºC, final temperature= 100°C, initial temperature= 15°C

Hence, Q = m × c × ∆T

Q = 150 × 4.18 × (100°C - 15°C)

Q = 627 × 85

Q = 53295J

The amount of heat added is 53295J

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.