The rusting of iron is an instance of a chemical change that takes a long time to occur.
Rust is an iron oxide, which is a typically reddish-brown oxide formed by the catalytic reaction of iron and oxygen in the presence of water or air moisture.
Rust is made up of hydrous iron(III) oxides and iron(III) oxide-hydroxide and is commonly associated with refined ironcorrosion.
Rusting is defined as the chemical process by which a red or orange coat forms on the surface of metals. Corrosion includes rusting.
When iron or its alloys are exposed to moist air, rust forms. The hydrated oxide is formed when oxygen and water in the air react with the metal.
(Fe2O3) is the well-known red form of rust, but iron has other oxidation states and can form other colors of rust.
Thus, this is the example of a chemical change that took a long time to occur.
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sound
wind
mechanical
mechanical energy is your answer :)
Answer:
When an experiment is replicanle it means it is able to be done again.
Explanation:
It is important because You need to see if you get different results or if you messed up the first time
-15 =5m/7 find m
Answer:
m= −21
Explanation:
Solve for m by simplifying both sides of the equation, then isolating the variable. m=−21
5.33 Liters is the volume of 15.2 grams of SO2 at STP.
Explanation:
If the mass of the gas, then you can divide the mass by the molecular weight of the gas molecules to get the number of moles. Then multiply this by 22.4 Liters / mole to get the volume.
PV = nRT => The Ideal Gas Law.
Each unit occurs three times and the cube root yields L-atm / mol-K, the correct units for R when used in a gas law context.
PV / nT = R. or PV = nRT.
R is called the gas constant.
PV = nRT => V = nRT/P
n = moles SO₂ = 15.2g/64g·mol⁻¹ = 0.238 mole
R = Gas Constant = 0.08206 L·atm/mol·K
T = Kelvin Temp = 273K at STP
P = pressure in atmospheres = 1.0 atm at STP
∴ V = (0.238mol)(0.08206 L·atm/mol·K)(273K)/(1.0atm)
=> 5.33 Liters SO₂.
B. From a liquid to gas
C. From solid to liquid
D. From a gas to plasma
Answer:
is the letter A. from gas to a liquid