Answer:
The answer is:
c) Is conducted below the recrystallisation temperature
Explanation:
In cold working the metal goes through a process of plastic deformation that is conducted below its recrystallization point (which its usually at room temperature), this in order to change permanently the makeup of its crystals. The temperature at which the process happens is low enough so that atoms cannot rearrange themselves.
The resulting metal is more resistant to deformation, and has an increased hardness and tensile strength.
Becuase they have water and oxygen carbon dioxide in them
Answer:
By weight they have the same mass, but the number of atoms is different
Explanation:
<span>the speed of radio wave radiation is lower than infrared radiation</span>
First, we need to assume acetylene to adapt an ideal gas behavior. So, we can use the Ideal Gas Law:
PV = nRT
Given:
V = 42 L
T = 305 K
P = 780 torr = 1.026 atm
R = gas constant, 0.0821 L atm/ mol K
n = amount of gas in the canister
1.026 atm * 42 L = n * 0.0821 L atm/mol K * 305 K
n = 1.72 moles of gas
