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Lady bird [3.3K]
3 years ago
12

Pure water is neutral. What is the appropriate justification for this? A. Water has equal H+ and OH- ions, making its pH 7, whic

h is considered a neutral pH. B. Water has more H+ than OH- ions, making its pH 5, which is considered a neutral pH. C. Water has more OH- than H+ ions, making its pH 8, which is considered a neutral pH.
Biology
2 answers:
Pani-rosa [81]3 years ago
7 0
The correct solution for this is explained the first option. Since water has an equivalent amount or number of H ions and OH ions, pure water itself is not slightly acidic nor basic. This equality of ions, causes the pH of water to be around the mid point of the pH scale which goes from 0 - 14, and thus is 7. This is a neutral pH.
ladessa [460]3 years ago
3 0

the answer is A.

Hope it helps

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Which statement best describes the relationship of photosynthesis and energy?​
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Answer: solar energy is required from the sun so as the cycle of photosynthesis can be completed

Explanation:

sun is required for photosynthesis

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Bone marrow is the soft connective tissue of bone that includes red bone marrow and yellow bone marrow. Red bone marrow is _____
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Answer:

Bone marrow is the soft connective tissue of bone that includes red bone marrow and yellow bone marrow. Red bone marrow is <u>heteroglobic</u> (blood cell forming) and contains <u>redactive</u> connective tissue, immature blood cells, and fat.

In children, red bone marrow is located in the <u>cyclonic</u> bone of most of the bones in the body as well as the <u>antebellum</u> of long bones. Much of the red bone marrow degenerates and turns into yellow bone marrow as children mature into adults. As a result, adults have red bone marrow only in selected portions of the <u>irregular</u> skeleton. Some of these include the <u>dismantled</u> bones of the skull, the vertebrae, the ribs, the sternum, and the hip bones.

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3 years ago
A scientist wanted to investigate whether light is required for the germination
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Answer:

The correct hypothesis would be -

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The hypothesis is always based on a question one wanted to answer. The hypothesis is the possible explanation of a world natural problem. One needs to make his hypothesis on the basis of the research he made.

To test the hypothesis one needs to develop an experiment like here formed an experiment to test if the light is required for the germination of seeds. Thus, hypothesis would be "if the light is required for seed germination of seed, then in the absence of light lettuce seed will not germinate"

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3 years ago
Plz help with science!
lisov135 [29]
6.A or C
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8 0
3 years ago
Entre los siguientes métodos de separación de mezclas, Jorge debe seleccionar el adecuado para separar sal de una mezcla de sal
makvit [3.9K]

Teniendo en cuenta las definición de evaporación, la respuesta correcta es la primer opción: para separar la sal, Jorge debe usar la Evaporación, porque con este método se evapora el agua y queda únicamente la sal.

El método de separación utilizado para el agua y la sal es: la evaporación.

La evaporación consiste en pasar el soluto disuelto en un liquido a estado gaseoso y ocurre al aumentar su temperatura de forma natural o artificial,. Dependiendo de que se desea evaporar se utiliza el material correspondiente. La técnica mas común es por contacto y puede acelerarse si utilizamos un material conductor dentro del liquido.

En otras palabras, se conoce que la evaporación es el proceso por el cual las distintas moléculas en estado líquido, como lo es en agua, pasan a un estado gaseoso de manera espontánea, siendo este el principal efecto de la evaporación.

Como se mencionó el método de separación utilizado para el agua y la sal es la evaporación. Durante este proceso, al aplicar calor, el agua se convierte en vapor y se libera al aire. La sal, como tiene otro punto de ebullición, no se evapora.

Entonces, la respuesta correcta es la primer opción: para separar la sal, Jorge debe usar la Evaporación, porque con este método se evapora el agua y queda únicamente la sal.

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