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3 years ago

Given what we know about wüstite, what are the iron-to-oxygen ratios for hematite and magnetite

Biology

2 answers:

artcher [175]3 years ago

8 0

Answer:

Magnetite- 3:4

Hematite-2:3

Explanation:

Hematite is an ore of iron. Its chemical formula is Fe₂O₃. It means there are 2 iron atoms per 3 oxygen atoms. The ratio of iron-to-oxygen is 2:3.

Magnetite is also an ore of iron. Its chemical formula is Fe₃O₄. It means there are 3 Iron atoms per 4 oxygen atoms. The ratio of iron-to-oxygen is 3:4.

RoseWind [281]3 years ago

5 0

The mineral form of iron II oxide is known as wüstite. Hematite (69.9% Fe) and Magnetite ( 72.4% Fe) are two other examples of iron oxide. Magnetite has naturally high iron content than Hematite.

iron-to-oxygen ratios of

Hematite

3.79 g of Fe and 1.63 g O

and

Magnetite

22.8 g Fe and 8.70 g O

where Fe symbolise iron and O symbolise oxygen.

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What are the two layers of the skin and the 1 layer below the skin?

olga55 [171]

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2 years ago

Biography of marget weymouth jackson

nataly862011 [7]

Answer:

just go on wikipedia

Explanation:

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2 years ago

The table shiws data for two groups of plants, one grown with fertilizer and the other without fertilizer

Yakvenalex [24]

Answer:

33.5

Explanation:

the mean height is the average. Simply add up the height of all the plants with fertilizer and divide by 5 (Being the amount of plants with fertilizer)

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3 years ago

External ear structure that helps to localize the direction from which sound arises

Step2247 [10]

The external ear structure is called the Pinna.

The Pinna helps to channel sound waves into the ear.

Many animals have the ability to move their pinna towards the direction of sound.

I have attached an image of a dog's ear to show you the external structure called the Pinna.

I hope this helps! I'm happy to answer any other questions you might have :)

[Image sourced from: https://www.msdvetmanual.com/dog-owners/ear-disorders-of-dogs/ear-structure-and-function-in-dogs]

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3 years ago

Which is a feature of a tonic receptor? Select one: a. The action potential occurs when there is a change in response to a chang

Ierofanga [76]

Answer:

For this receptor, the stimulus begins with an explosion of action potentials.

that would be the correct option.

Explanation:

A tonic receptor is one that is activated when the action potentials were maintained over time and during the signaling of the receptor.

Tone receptors require continuous stimulation over a period of time to trigger a response and deliver it to the central nervous system.

It keeps the nervous system constantly active in the environment that surrounds it.

They are slowly adaptable, an example of these receptors are the merkel and ruffini receptors.

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2 years ago