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Firdavs [7]
3 years ago
9

What type of reaction is the rusting of iron?

Chemistry
1 answer:
FrozenT [24]3 years ago
7 0

(a) single composition

Explanation:

Rusting of iron it happens when iron will react with oxygen to form iron (III) oxide.

4 Fe + 3 O₂ → 2 Fe₂O₃

This reaction is a single composition reaction because two elements will react to form a single substance.

Learn more about:

types of chemical reactions

brainly.com/question/665908

#learnwithBrainly

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A sample of helium gas at 27.0 °C and 3.60 atm pressure is cooled in the same container to a temperature of -73.0 °C. What is th
trasher [3.6K]

Answer: The new pressure, if volume and amount of gas do not change is 2.40 atm

Explanation:

To calculate the final temperature of the system, we use the equation given by Gay-Lussac Law. This law states that pressure of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

\frac{P_1}{T_1}=\frac{P_2}{T_2}

where,

P_1\text{ and }T_1 are the initial pressure and temperature of the gas.

P_2\text{ and }T_2 are the final pressure and temperature of the gas.

We are given:

P_1=3.60atm\\T_1=27^0C=(27+273)K=300K\\P_2=?\\T_2=-73.0^0C=(273-73)=200K

Putting values in above equation, we get:

\frac{3.60}{300K}=\frac{P_2}{200K}\\\\P_2=2.40atm

Thus the new pressure, if volume and amount of gas do not change is  2.40 atm

5 0
3 years ago
If an atom of Carbon has 12 protons and 14 electrons what kind of ion is it and what is its charge?
Leto [7]
The answer will be Magnesium. It is a two positive ion and it can charge electrons and protons.
4 0
3 years ago
Which of the following has the most energy?
iren2701 [21]
Ultraviolet rays has the most energy
8 0
3 years ago
HELP
Vesnalui [34]

Answer:

145.8g

Explanation:

Given parameters:

Number of moles of magnesium hydroxide  = 2.5mol

Unknown:

Mass of Mg(OH)₂  = ?

Solution:

To solve this problem we use the expression below;

  Mass of Mg(OH)₂ = number of moles x molar mass

 Molar mass of Mg(OH)₂ = 24.3 + 2(16 + 1)  = 58.3g/mol

 Mass of Mg(OH)₂ = 2.5 x 58.3  = 145.8g

3 0
3 years ago
2A1 +3CL2, → 2AICI3 what is the reaction
DerKrebs [107]

Answer:

redox reaction

Explanation:

8 0
3 years ago
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