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3 years ago

What type of temperature changes produce large crystals

Chemistry

1 answer:

vladimir1956 [14]3 years ago

3 0

Warm temperatures will make crystals form quicker and larger

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Which mineral might scratch the mineral fluorite, but would not scratch the mineral amphibole? 1 brucite 2. magnesite 3. carnall

NARA [144]

Answer:

olivine i think

Explanation:

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2 years ago

Which interactions and processes contribute to the dissolution of ionic compounds in water?

Tanya [424]

Explanation:

Polarity is defined as the development of partial charges on the atoms of a molecule. In a water molecule, there are hydrogen and oxygen atoms.

Due to the difference in electronegativity of both hydrogen and oxygen atom there is development of partial positive charge on hydrogen atom and a partial negative charge on oxygen atom.

So, when bond between hydrogen and oxygen will break down then it will form hydrogen ions ( $H^{+}$ ) and oxygen ions ( $O^{2-}$ ).

Ion-dipole interactions are defined as the interactions that occur when an ion interacts with the dipole of a molecule.

When an electron is added to a neutral atom to convert it into a negative ion then the amount of change taking place in its energy is known as electron affinity.

So, oxygen atom has an affinity towards cations and hydrogen atom has an affinity for anions.

Thus, we can conclude that following interactions and processes contribute to the dissolution of ionic compounds in water:

1. Affinity of oxygen towards cations

2. Ion–dipole interactions

4. Hydration

6. Affinity of hydrogen towards anions

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3 years ago

Who is Gilbert Newton lewis

skelet666 [1.2K]

Gilbert N. Lewis (1875-1946) was an American physical chemist.

His work with heavy water and resources were adapted by Ernest Lawrence in the development of the cyclotron.

SCIENTIFIC CONTRIBUTIONS

Lewis made many contributions to science. He was nominated for the Nobel Prize 41 times, though he was never awarded the prize.

He discovered covalent bonds and electron pairs. He worked with isotope separation, and became the first person to purify a sample of heavy water. The heavy water was later used as projectiles in Lawrence’s 27-inch cyclotron.

He also made contributions in ideas on relativity and acid-base reactions and coined the term “photon” as the smallest unit of light.

8 0

3 years ago

Are iron filings a pure substance?

Elena L [17]

Yes they are a pure substance

8 0

3 years ago

What would happen if BHP changed to 45mmHg and the other pressures remained constant?A. Filtration would decrease, but still fun

Vladimir [108]

Answer:

C. Filtration will cease

Explanation:

Generally, blood hydrostatic pressure (BHP) in the capillaries of human body drives filtration. A significant change in the value of the blood hydrostatic pressure leads to a corresponding change in the rate of filtration. The higher the change in the BHP, the higher the change in filtration and vicer versa. Thus, if BHP changes to 45 mmHg, filtration will cease.

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3 years ago