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2 years ago

The hardest known mineral is _____. topaz talc diamond graphite

Chemistry

2 answers:

vagabundo [1.1K]2 years ago

5 0

<span>The hardest known mineral is diamond.
</span>

liberstina [14]2 years ago

4 0

Hi there, thanks for asking a question here on Brainly!

The hardest known mineral in this planet is the diamond.

Answer: Letter C ✅

Hope that helps! ★

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eimsori [14]

Answer:

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2 years ago

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Formula of <br> Al³⁺ and SO₄²⁻

Sergio039 [100]

Answer:

The formula of Al³⁺ and SO₄²⁻ is aluminum sulfate.

Explanation:

The formula for aluminum sulfate is Al₂(SO₄)₃. If we say in terms of ions. The ions are Al³⁺. It is a positive ion or the cation. Other ion is SO₄²⁻. It is sulfate ion. It is anion.

Aluminum sulphate is used in water purification and as a mordant in dyeing and printing textiles.

Hence, the formula of Al³⁺ and SO₄²⁻ is aluminum sulfate.

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2 years ago

If an atom has three shell and number of valence electrons are two. Is this element metal

cluponka [151]

Answer:

Metal

Element: Calcium

Valency: 2

Explanation:

To find the element, let's use the periodic table. (Look below)

We already went past 3 shells, just need the 2 electrons after it.

Just skip to the 4th row and count 2 to the right

We end up at Calcium.

Calcium is a metal and we're also on the alkaline earth metals column.

Calcium will need to lose 2 electrons to reach stability, so the valency is 2.

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3 years ago

How is kinetic energy of particles and temperature related

Rufina [12.5K]

Answer:

The higher the temperature, the faster the particles move, the lower the temperature, the slower.

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3 years ago

Imagine that the moon’s orbit wasn’t elliptical and it that it did not orbit the earth at a 5 degree angle. How would this chang

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Answer:

Without the tilt, lunar eclipse will happen every month.

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3 years ago

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