Explanation:
A matchstick has a lot of chemical energy stored in it. When the match is struck, it burns and the chemical energy in it produces heat energy and light energy.
brainliest and follow and thanks
Answer:
Correct answer is: "Cold Water"
Explanation:
EDGE 2020
Weathering<span> breaks down and loosens the surface minerals of rock so they can be transported away by agents of erosion such as water, wind and ice. There are </span>two types<span> of </span>weathering<span>: </span>mechanical<span> and </span>chemical<span>. </span>Mechanical weathering<span> is the disintegration of rock into smaller and smaller fragments.</span>
Answer: The mass in 
atoms of zinc is 0.405 g.
Explanation:
Given: Atoms of zinc =
It is known that 1 mole of every substance contains 
atoms. So, the number of moles in given number of atoms is as follows.
As moles is the mass of a substance divided by its molar mass. So, mass of zinc (molar mass = 65.39 g/mol) is calculated as follows.
Thus, we can conclude that the mass in atoms of zinc is 0.405 g.
Given:
P1 = 13.0 atm
T1 = 20 °C
T2 = 102 °C
Required:
P2 of oxygen
Solution:
At constant volume,
we can apply Gay-Lussac’s law of pressure and temperature relationship
P1/T1=P2/T2
(13.0 atm) / (20 °C)
= P2 / (102 °C)
P2 = 66.3 atm
The answer is not in the choices given.
