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den301095 [7]
3 years ago
5

M CALCULATOR

Chemistry
1 answer:
dolphi86 [110]3 years ago
6 0
Could you post another question with a photo? I am sorry...
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Which groups on the periodic table contain metalloids?
nasty-shy [4]
C. Groups 13-16 contain metalloids.

If you look on a periodic table, these usually have a different color.
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3 years ago
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In an atom, the number of neutrons determines most specifically the ________.
lord [1]

In an atom, the number of neutrons determines most specifically the isotopes of an element.

<h2>Further Explanation</h2><h3>An atom  </h3>
  • An atom is defined as the smallest particle of an element that can take part in a chemical reaction.
  • Atoms are made of energy shells and the inner nucleus.
  • It is also made up of subatomic particles, protons and neutrons.
<h3>Neutrons  </h3>
  • They are sub-atomic particles in an atom that are found in the nucleus of an atom. They have a zero charge or no charge.
  • Neutrons are slightly heavier than protons.
  • The number of protons and neutrons in a nucleus of an atom results to the atomic mass number of an atom. Like protons they only take part in nuclear reactions.
<h3>Protons</h3>
  • Protons are subatomic particles that are found in the nucleus of an atom. They are positively charged. with a charge of +1.
  • The number of protons differ from one element to another and thus used as the atomic number of an individual element.
  • The nucleus of an atom is positively charged due to the positive charge of the protons.  
  • Additionally, protons do not take part in chemical reactions but in nuclear reactions.
<h3>Electrons  </h3>
  • They are found orbiting the nucleus on energy shells based on Clouds’ theory. Electrons are negatively charged each with a charge of -1.
  • The number of electrons and protons in a neutral atom are equal. Additionally they have the least mass of the three sub-atomic particles.
  • Electrons are the only sub-atomic particles that take part in chemical reactions.
<h3>Isotopes </h3>
  • Isotopes are atoms of the same element that have the same mass number but different atomic number.
<h3>Mass number;</h3>
  • Mass number is the sum of the number of protons and neutrons in the nucleus of an atom of an element.

Keywords: Atom, sub-atomic particles, electrons, protons, neutrons, isotopes  

<h3>Learn more about:</h3>
  • Sub-atomic particles: brainly.com/question/12762384
  • Electrons: brainly.com/question/1264222
  • Protons: brainly.com/question/1264222
  • Neutrons: brainly.com/question/1264222
  • Mass number: brainly.com/question/2152789
  • Atomic number: brainly.com/question/8100107

Level: High school

Subject: Chemistry  

Topic: Atomic structure

4 0
3 years ago
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3. When two atoms of 2H (deuterium) are fused to form one atom of 4He (helium), the total energy evolved is 3.83 × 10-12 joules.
balandron [24]
3.
∆E = ∆m x c ² ∆m = E / c ² ∆m = 3,83•10^-12 / 3•10^8 ² ∆m = 4,256•10^-29 kg

Taking this class as well 
6 0
3 years ago
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Other than providing vital oxygen, how else do plants support us, especially considering our diet of plants and animals (which c
arsen [322]

Plants serve as the main source of nutrition for humans as well as provide many products for human use, such as firewood, timber, fibers, medicines, dyes, oils, and rubber.

Plants are multicellular eukaryotic organisms whose mode of nutrition is mainly autotrophic.

Plants play many important roles in life more especially that of producing food on which many other organisms depend on.

Some of the important ways by which plants support human life include:

  1. Provision of food: plants trap the energy of the sunlight and through the process of photosynthesis produce food on which other living organisms such as animals depend on.
  2. Provision of oxygen: during the process of photosynthesis, plant release oxygen into the atmosphere which is needed by animals for respiration.
  3. Recycling of water: through the process of transpiration occurring in leaves of plants, water is recycled in nature.
  4. Provision of other products such as timber, fibers, medicines, dyes, oils, and rubber.

Therefore, plants serve as the main source of nutrition for humans as well as provide many products for human use, such as  timber, fibers, medicines, dyes, oils, and rubber.

Learn more about importance of plants at: https://brainly.in/question/237715

8 0
3 years ago
Which of the following types of matter can occupy the same space at the same time?
trasher [3.6K]

Answer:

Gas, solid, and liquid.

Explanation:

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