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3 years ago

Use the conservation of mass to explain why a rusty nail weighs more than the original nail.

Chemistry

1 answer:

cricket20 [7]3 years ago

8 0

<h3><u>Answer and Explanation</u>;</h3>

Rust is iron oxide, a molecule consisting of iron and oxygen. The mass of the iron in the rust molecules comes from the original nail, but the mass of the oxygen has come from the air.
When rust forms on iron, the mass of the iron object is increased by the mass of the oxygen that has combined with some of the iron.
Rusty iron weighs more because the iron reacts with oxygen in the air to form oxides which are solids which appear to grow on the iron as more oxygen comes along.

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How many atoms are in 1.14 mol of sulfur trioxide

yawa3891 [41]

2.75 x 10^24

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When bar-headed geese fly at very high altitudes (possibly over Mount Everest!), they breathe very thin air where the partial pr

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Answer:hemoglobin that has a high affinity for oxygen

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2 years ago

How many quarters are in $500

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Answer:

$\boxed{2000}$

Explanation:

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3 years ago

Assign each species to the expression that most accurately describes the basic units of that substance. categories: single atoms

Temka [501]

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2 years ago

Read 2 more answers

Describe the properties of alkali metals. Based on their electronic arrangement, explain whether they exist alone in nature.

bearhunter [10]

Answer:

- They are highly reactive metals

- They have low electro negativity

- They have low ionization energy

- They don't exist alone in nature

- They have low densities

Explanation:

Alkali metals are the elements in group 1 of the periodic table. They include Sodium, Lithium, Potassium e.t.c.

Due to the fact they have one atom in their outermost shell, they are very unstable because they easily react with other elements and are therefore don't exist alone in nature but combined with other elements for this same reason.

Since alkali metals don't easily attract other elements due to it's lone pair in the outer most shell, it can be said to have low electro negativity.

Also, they don't need energy to discharge their electrons since they are highly reactive due to their lone pair in the outermost shell and so we say they have low ionization energy.

Due to this reason, they also have low densities.

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2 years ago