Y'all please help me my braincells aren't working answer question 12b only!

Answers

Answer 1

2 Hydrogen molecules an 1 Oxygen

Answer 2

there is a 2 after the H, therefore 2 Hydrogens and nothing after the O, therefore 1 Oxygen

Related Questions

Describe Earth as a system. Choose ALL that apply

a. solar radiation moves freely

b. open

c. closed

d. due to gravity matter cannot freely move

i dont know the subject help

Answers

Answer: D and it should be C or A I'm second guessing-

Explanation:

Because the Earth is round, the frigid polar regions never get a high sun, and because of the tilted axis of rotation, these areas receive no sun at all during part of the year. The Earth revolves around the sun in an elliptical orbit and is closer to the sun during part of the year. When the sun is nearer the Earth, the Earth's surface receives a little more solar energy. The Earth is nearer the sun when it is summer in the southern hemisphere and winter in the northern hemisphere.

Earth is described as an open system and due to gravity matter cannot move freely and the correct options are option B and D.

Earth can be described as an open system due to its interactions with its surroundings. It receives solar radiation from the sun, which provides energy to sustain various processes on Earth. This energy drives the Earth's climate, weather patterns, and the cycling of substances such as water, carbon, and nutrients. However, Earth is not a closed system because it exchanges matter with its surroundings.

For example, it gains meteorites and cosmic dust from space and loses gases, such as hydrogen and helium, from its upper atmosphere.

Additionally, Earth's gravity holds its atmosphere and prevents the escape of gases and most solid materials into space. Thus, Earth's system is characterized by the exchange of energy and matter within the constraints of gravity.

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I'll GIVE BRAINLIST PLEASE HELPP DUE AT 5:00
Which fossil in the second simulation could be an index fossil? Make an evidence-based claim. 1.

In the first simulation, where can you infer that there may have been a mass extinction? Make an evidence-based claim. 2.

Answers

Answer: A valuable index fossil must be distinctive or easily recognizable, abundant, and have a wide geographic distribution and a short range through time.

Explanation:

An index fossil is any animal or plant preserved in the Earth's rock record that is characteristic of a particular span of geologic time or environment. A valuable index fossil must be distinctive or easily recognizable, abundant, and have a wide geographic distribution and a short-range through time. Index fossils are the basis for defining boundaries in the geologic time scale and for the correlation of strata. In marine strata, index fossils that are commonly used include the single-celled Protista with hard body parts and larger forms such as ammonoids. In terrestrial sediments of the Cenozoic Era, which began about 65.5 million years ago, mammals are widely used to date deposits. These animal forms have hard body parts, such as shells, bones, and teeth, and evolved rapidly.

Answer:

Ammonites, trilobites and graptolites are often used as index fossils.

Mass extinction can be identified by traces in the fossil record. The strata corresponding to this time period contain a variety of life forms when compared to a younger layer. it can be inferred that mass extinction is a possibility.

Explanation:

Soap and bleach are both alkaline, or basic. Soap is safe to touch and use on skin. Bleach is toxic and is not safe to touch. Why is soap safe to touch but not bleach?

Soap is a weaker base than bleach. This means that soap has more hydronium ions than bleach. It is closer to a neutral pH.

Soap is a weaker base than bleach. This means that soap has more hydroxide ions than bleach. It is closer to a neutral pH.

Soap is a stronger base than bleach. This means that soap has more hydronium ions than bleach. It is closer to a neutral pH.

Soap is a stronger base than bleach. This means that soap has more hydroxide ions than bleach. It is closer to a neutral pH.

Answers

Answer:

you can yes soap because the chemicals are safe in it

Explanation:

bleach you can not yes because but has wires cgemucaks than soap

Soap is a weaker base than bleach and it has more hydronium ions than bleach. It lies closer to a neutral pH. Therefore, option (A) is correct.

What are acids and bases?

An acid is capable of donating a proton to another substance and is generally identified by its sour taste. A base is capable to accept a hydrogen ion from acid and is characterized by a bitter taste and a slippery texture.

Acids can turn blue litmus paper into red while Bases can turn red litmus paper into blue. A base can dissolve in water and when bases chemically react with acids, yield salt, and water as products.

pH = -log [H⁺]

The pH value of the bases lies between 7 to 14. The more the pH value stronger will be the base. The concentration of hydronium ions will be less if the pH value is higher. Therefore, soap has less pH value so it has more hydronium ions.

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