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2 years ago

Which of these is an example of a chemical reaction that occurs at a very slow rate

Chemistry

2 answers:

mojhsa [17]2 years ago

5 0

Answer is: D. iron rusting.

Balanced chemical reaction of forming rust: 4Fe + 3O₂ → 2Fe₂O₃.

The mass of the rusted nail, for example, equals the mass of iron and the oxygen from the air it reacted with to form the rust.

Alcohol burning and an explosion are exothermic (energy is released) and very fast reactions.

Black_prince [1.1K]2 years ago

5 0

Iron rusting is the answer because it take a longer time for iron to rust than it take for the other things.

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Ni (s) + O2 (g) → NiO (s)

kicyunya [14]

Answer:

Explanation:

2NiS + 3O2 = 2NiO + 2SO2

3 0

2 years ago

An empty beaker is weighed and found to weigh 23.1 g. Some potassium chloride is then added to the beaker and weighed again. The

GuDViN [60]

Answer:Mass of Potassium chloride =1.762g

Explanation:

Mass of empty beaker = 23.100 g

Mass of beaker with Potassium chloride = 24.862g

Mass of Potassium chloride = Final weight - initial weight = Mass of beaker with Potassium chloride - Mass of empty beaker = 24.862-23.100 = 1.762g

8 0

2 years ago

A sample of gaseous neon atoms at atmospheric pressure and 0 °c contains 2.69 * 1022 atoms per liter. the atomic radius of neon

omeli [17]

Explanation

Radius of neon atom : 69 pm = $69\times 10^{-12} m$

Volume occupied by the one atom: $\frac{4}{3}\pi r^3$

$=\frac{4}{3}\times 3.14\times(69\times 10^{-12} m)^3=1.37\times 10^{-30} m^3$

given that $2.69\times 10^{22}$ atoms are present in 1L

1 L = 0.001 $m^3$

The volume occupied by the $2.69\times 10^{22}$ neon atoms

$2.69\times 10^{22}\times 1.37\times 10^{-30} m^3=3.68\times 10^{-8} m^3$

Fraction of volume occupied by the neon atom:

$=\frac{3.68\times 10^{-8} m^3}{0.001 m^3}=3.68\times 10^{-11} m^3$

$3.68\times 10^{-11} m^3$

The fraction of of volume occupied by the neon atom is very less than the 1 L which indicates the presence of large amount of empty space between the atoms of the gas.

3 0

2 years ago

Why does the moon's gravitational pull have more effect on Earth's tides than the sun's gravitational pull?

BaLLatris [955]

I believe it’s c because if you really read and close read it will make more sense

6 0

2 years ago

Read 2 more answers

The molecular structure of water contains two atoms of hydrogen and one atom of oxygen. When water reaches its boiling point and

nikklg [1K]

The water reaches its boiling point and turns into water vapor. This process is a physical change. The change is substance status. And the physical change will not destroy the molecular structure. So the molecular structure will not change.

7 0

3 years ago