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3 years ago

What is the only difference between an atom and an ion?

Chemistry

1 answer:

Andrei [34K]3 years ago

8 0

An ion is partials and an atom is a base

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What is the volume in liters of hydrogen gas that would be produced by the reaction of 40.0 g of Al with excess HCl at STP accor

DaniilM [7]

The volume in liters of Hydrogen gas = 49.28 L

<h3>Further explanation </h3>

The reaction equation is the chemical formula of reagents and product substances

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products

Reaction

2 Al (s) + 6 HCl (aq) → 2 AlCl₃ (aq) + 3 H₂ (g)

mol Al :

$\tt mol=\dfrac{mass}{Ar}=\dfrac{40}{27}=1.481$

mol H₂ :

$\tt \dfrac{3}{2}\times 1.481=2.2$

At STP, 1 mol =22.4 L

so the volume of hydrogen :

$\tt 2.2 \times 22.4=49.28~L$

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3 years ago

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Density is ___ to pressure

Ann [662]

Proportional to pressure

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Which statement is part of the kinetic molecular theory?

mylen [45]

Gas particles lose their energy during collisions

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Write names of one diatomic and tetra -atomic element.

Lady bird [3.3K]

Nitrogen is diatomic which exists as N2. This is because of its small size and high electronegativity.

Phosphorus is tetra atomic which exists as P4.

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3 years ago

Which force was the first to be discovered?

babymother [125]

Answer:

Gravity

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Sir Isaac Newton was an English mathematician and mathematician and physicist who lived from 1642-1727. The legend is that Newton discovered Gravity when he saw a falling apple while thinking about the forces of nature.

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