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Vitek1552 [10]
3 years ago
5

The chain on a bicycle rusts faster when the bicycle is left outside in damp conditions. Which of the following factors affect t

he rate at which the bicycle chain rusts?
a) Surface area
b) concentration of oxygen atoms in air
c) temperature
d) all of the above
e) b and c
f) a and c
g) a and b
Chemistry
1 answer:
andreyandreev [35.5K]3 years ago
6 0
D
Larger surface area speeds up reactions 
Rust is an oxide so more oxygen should speed up rate of rust
Temperature also speeds up reactions

+ The humidity affects it aswell

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Use the atomic mass of indium to calculate the relative abundance of indium-113.
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The relative abundance of indium-113 is 4%.

The isotopes are species of the same element having the same atomic number but a different mass number.

The elements occurring in nature exist as multiple isotopes.

When we take into account the existence of these isotopes and their relative abundance (percent), the average atomic mass of that element can be computed, which is given by the following formula,

Average atomic Mass= (%age of isotope 1) x (Mass of isotope 1) + (%age of isotope 2) x (Mass of isotope 2)/100

Indium exists in the form of Indium-113 and Indium-115.

The mass of Indium-113 is 112.90 u.

The mass of Indium-115 is 114.90 u.

The average atomic mass of Indium is 114.82 u.

Let the %age of isotope 1(Indium-113) be X.

Then, the %age of isotope 2(Indium-115) would be 100-X.

Applying the values in the formula,

Average atomic mass = 112.90X+114.90(100-X)

114.82 = 112.90X+114.90(100-X)

On solving the above equation, the value of X comes out to be 4%.

Thus, the relative abundance/%age abundance of Indium-113 is 4%.

To know more about "Average Atomic Mass", refer to the following link:

brainly.com/question/13753702?referrer=searchResults

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1 year ago
What is science?
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What is science?

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3 years ago
How many moles are in 9.50 x 1022 molecules of CO? Be sure to ALL work below and report your answer using the correct number of
eimsori [14]

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Explanation:

We are given;

9.50 x 10^22 molecules of CO

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