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Korvikt [17]
3 years ago
6

Complete the following sentence: "When ionic compounds dissociate in water, each ion is surrounded by a sphere of hydration: ___

_______ are surrounded by the partially negative charge of the water molecule's __________; __________ are surrounded by the partially positive charge of the water molecule's __________.
Biology
2 answers:
Archy [21]3 years ago
3 0

Answer:

Cations, Oxygen, Anions, Hydrogen

Explanation:

Water molecule is polar (meaning it has dipoles). The oxygen having a higher atomic mass attracts most of the electron cloud of the molecule becoming partially negatively charged and leaving the hydrogen end to be partially positive.

An Ionic compound is one between two atoms where one donates its electrons to the other for both to achieve stable configuration. The two atoms, therefore, become charged and are bought together by electrostatic forces.

When an ionic compound is put in water, it dissociates into its ions (anions and cations) They attract and repel with the polar water molecules depending on their charges. The anions (negatively charged ion) are surrounded by water molecules with the hydrogen ends and the cations are surrounded by water molecules with the oxygen ends.

Travka [436]3 years ago
3 0

Answer:

Positive sodium ion, oxygen atom, negative chloride ion, hydrogen are the answers

Explanation:

Water can dissolve many solutes. Water molecules are polar; however, it acts differently with charged polar substances. This interaction of water with charged substances forms hydration shell surrounding the solute. So, when the ionic compound NaCl dissociate in water, the hydration shell formation occurs around the ions.

The positively charged Na become surrounded by partially negative charge of the oxygen atom of water molecule and the negatively charged Cl become surrounded by partially positive charge of hydrogen atoms of water.

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What is meant by ‘fishing down the food web’?
stepan [7]

Answer:

Fishing down the food web is the process whereby fisheries in a given ecosystem, "having depleted the large predatory fish on top of the food web, turn to increasingly smaller species, finally ending up with previously spurned small fish and invertebrates".

6 0
2 years ago
1. This scene is in British Columbia's Mount Robson Provincial Park.
solniwko [45]

There are four environments on Earth that are called spheres: hydrosphere, lithosphere, atmosphere, and biosphere.

<h3>Features associated with each of Earth's four spheres.</h3>

<h3>Hydrosphere </h3>

It is the set of all the water on the planet, including those that form clouds.

<h3>Lithosphere</h3>

The continuous part of our planet, made up of rocks and soil. The most superficial part is called the earth's crust.

<h3>Atmosphere</h3>

It is the gaseous sphere that surrounds our planet, composed mainly of gas oxygen and gas.

<h3>Biosphere </h3>

It is the part of our planet that can support life

<h3>Internal processes</h3>

The atmosphere and hydrosphere are the main regulators of the planet's climate. Without both, the temperature changes would be very sudden: at night it would drop to minus 150°C and during the day above 100°C, making life on Earth difficult.

With this information, we can conclude that the spheres of the earth, support life, and make the planet earth unique.

Learn more about Spheres of the earth in brainly.com/question/1155156

8 0
2 years ago
What causes a plant’s leaves to wilt?
kati45 [8]

Answer:

when it loses all of it's nutrients from the water it dies and dries out

Explanation:

6 0
3 years ago
Genetic engineering is the process of manipulating genes for practical purposes. Today, scientists have genetically engineered m
Maslowich

Genetic engineering is the process of manipulating genes for practical purposes. today, scientists have genetically engineered many types of organisms including crop plants. which of the following is a current benefit gained from genetically engineered crops? a. some genes can be transferred to wild plants in the area. b. some animals develop allergies to the genetically engineered crops. c. some food staples, such as rice, contain more nutrients. d. some disease resistant fruits and vegetables are less flavorful.

Answer:

. b. some animals develop allergies to the genetically engineered crops. c. some food staples, such as rice, contain more nutrients

Explanation:

Rice is global staple food. It is mostly affordable by the poor and peasant farmer wordwilde.Vitamin A is an important vitamin for good eye sight and also for boosting the  immunity.

This useful vitamin is  present in eggs, cheese and liver. Which are expensive for poor families Some small quantity are produced as carotene found in carrot. However, a precursor of Vitamin A called Pro-vitamin A carotenoids  is present in the part of rice called the Aleurone layer.

However this part of the rice is not in the endosperm thus the vitamin are washed way during processing of white rice .Although this is present in brown rice. Basically, the energy storage in most crop seeds is stored in the endosperm. Thus the vitamin in the rice are not stored are therefore not imbibe during consumption.

Therefore in order to incorporate  carotenoid into the endosperm to avoid been wasted, Daffodil was used. The genes for the transcription of carotene in daffodils and from  particular soil bacteria called Pantoea Anantis were extracted, to transfer carotenoid into the rice endosperm. This is called the Golden rice,, because the rice appear golden from the incorporation of the carotenoid into the endosperm though genetic engineering. This appear orange from the carotene pigment present in the endosperm.

Thus from the consumption of the rice ,poor family could imbibe vitamin A into their diet.

5 0
3 years ago
The _________________ are new substances that are created following a chemical reaction.
lora16 [44]

Answer:

products

Explanation:

reactants combine to produce products in a chemical reaction

6 0
3 years ago
Read 2 more answers
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