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3 years ago

If element X has 19 protons, how many electrons does it have?

Biology

2 answers:

tatuchka [14]3 years ago

7 0

Answer: 19 electrons

Explanation: In an Element there are an equal number of protons and electrons. The amount of neutrons may vary though.

miss Akunina [59]3 years ago

6 0

<h2>Answer:</h2>

Element has will have 19 electrons.

<h2>Explanation:</h2>

The atom comprises of three sub-atomic particles namely protons, electrons and neutrons. The protons are positively charged, electron is negatively charged and neutron is null charged. For all atoms acting as component of elements the following rules applies:

Atomic number of elements represents the total count of protons in it.
The number of electron and proton is same.
The difference between mass number and atomic number gives the neutron value.

From the above rules, it can be inferred that as the number of protons and electrons are same, as element X as 19 protons, it will have 19 electrons.

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Yes it is.

Carbon dioxide goes through plants, which they turn into oxygen. Humans and animals take in the oxygen and breathe out carbon dioxide. Then it repeats.

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3 years ago

During an experiment, Harry enclosed two leaves of a plant in glass flasks labeled A and B. Flask A had water and carbon dioxide

Evgesh-ka [11]

The answer here is THE LEAF IN FLASK B WILL NOT GET CARBON DIOXIDE TO MAKE GLUCOSE. In order to carry out photosynthesis, plant needs several ingredients. It needs chlorophyll, the green coloring pigment in plants, sunlight, water and carbon dioxide. To nurture growth, plant needs a favorable medium (usually good soil but there are also those that can grow attached to another plant and those called aerial plants) and nutrients. Carbon dioxide is one of the most abundant gases in the atmosphere. It plays an important role in both plant (photosynthesis) and animal (respiration) processes. In photosynthesis, green plants convert carbon dioxide and water into food compounds such as glucose and water. The oxygen released during photosynthesis is needed by animals, human also, for respiration. Potassium hydroxide, on the other hand, is an inorganic solid compound which absorbs carbon dioxide. During experiments, plants placed inside a solution with potassium hydroxide will test negative in starch test. Absence of starch is attributed to the absorption of carbon dioxide by potassium hydroxide. Photosynthesis did not happen because of the absence of one of its ingredients which is carbon dioxide,hence absence of one of the end products, starch.

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3 years ago

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What is an example of a mineral found in bones that is important to body processes

Hatshy [7]

C. Calcium Salts
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3 years ago

What class of organic molecules provide long term energy storage

mote1985 [20]

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4 years ago

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Look at the following, and decide if they are carbohydrates or not.

Aliun [14]

Answer:

A. C4H8C4 - NOT

B. C12H12C4 - NOT

C. CóH1206 - yes

D. C4H2020 - NOT

Explanation:

Carbohydrates are one of macro molecules made up of carbon, hydrogen and oxygen. These are essential molecule as they provide nutrition and makes structural component in plants too.

The ration of carbon, hydrogen and oxygen is similar in almost every sugar or carbohydrate which is 1:2:1, one carbon molecule and one oxygen molecule per two molecule of hydrogen.

In choice A, and B have no oxygen molecule so they can not be carbohydrate, where as D have inappropriate ration in comparison to the carbohydrates.

Thus, the correct answer is :

A. C4H8C4 - NOT

B. C12H12C4 - NOT

C. CóH1206 - yes

D. C4H2020 - NOT

4 0

4 years ago