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storchak [24]
4 years ago
6

This sandstone includes small rounded pebbles and was deposited far from the ocean. what is the most likely environment in which

it formed?
Chemistry
1 answer:
professor190 [17]4 years ago
4 0
 after Paying  attention to the clues ,

Small Rounded Pebbles
Deposited far from the ocean

The most likely environment in which it formed would be : Beach or Delta

hope this helps
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Compressibility refers to the amount or extent to which a substance can be compressed, also involving the the relationship between changes in volume due to applied pressure.
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1 mole solution of NaCl contains
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If you dissolve 58.44g of NaCl in a final volume of 1 liter, you have made a 1M NaCl solution, a 1 molar solution.

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Complete the following paragraph to describe how the electrostatic forces in salt compounds can be overcome by interactions betw
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Answer:

The words are: (2) ionic bonds; (3) ion-dipole forces; (4) soluble; (8) higher

Explanation:

-Salts are composed of ions that form a tightly packed and ordered network, which is called a crystal lattice, and it is held together by <u>ionic bonds</u>.

<u><em>Explanation</em></u><em>: salts are ionic compounds, which are composed by oppositely charged ions (cations and anions) which are bonded each other by ionic bonds, in an ordered arrangement, often a crystalline solid.</em>

-When a salt is added to a polar solvent like water, the ions interact with the solvent molecules via <u>ion-dipole forces</u>, which overcome the forces originally holding the ions together.

<em>Explanation: the molecules of a polar solvent are dipoles because they have dipolar momentum (a difference in charge due to a electronegativiy difference). When a salt is dissolved in a polar solvent, it dissociates in ions. So, the resulting interactions between these species are ion-dipole forces.</em>

-The ions are then isolated and stabilized in solution via these interactions, and when this occurs for most of the salt compound, it is considered <u>soluble</u> in that solvent.

<em>Explanation: the ions in solution are surrounded by solvent molecules which stabilizes them. A salt which is enterely dissolved in a solvent is soluble in that solvent.</em>

-Due to the nature of the interaction between ions and solvent molecules, a concentration of ions can be dissolved <u>higher</u> in water than in alcohol.

<em>Explanation: water molecules have unique properties that make water an universal solvent. Due to these properties and its polarity, water can dissolve larger quantities of salt than other polar solvents such as alcohol. </em>

3 0
3 years ago
What is the charge on the tetrapeptide lys-lys-his-glu at ph 7?
iren [92.7K]

Answer: The charge on peptide chain lys-lys-his-glu at pH 7 is +1.

Explanation: A peptide chain is the chain formed from the condensation of two amino acids releasing H_2O molecule and forming N-terminal(Nitrogen- end) and C-terminal(Carboxyl-end). The bonds formed are known as peptide bonds.

Here 4 amino acids join together forming a peptide chain

lys-lys-his-glu

In this peptide chain N-terminal is from lysine (lys) and C-terminal is from Glutamic acid (Glu).

At pH=7,

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So, there are 3 amino groups present each having (+1) charge and 2 carboxyl groups each having (-1) charge.

Total charge on peptide chain = (3\times (+1))+(2\times (-1))

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