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JulijaS [17]
3 years ago
5

According to periodic table which elements has seven valence electrons

Chemistry
1 answer:
kondaur [170]3 years ago
7 0
Halogens have seven valence electrons and reqires one more electron to complete its octet
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Letters B and C on this model show us daytime on Earth. Both locations have daytime because of A) Earth's tilt on its axis. B) E
ch4aika [34]
Answer is D earths distance from the sun
7 0
3 years ago
How many oxygen atoms are present in 23.6 grams of aspartame?
olga55 [171]
The formula of aspartame is <span>C14H18N2O5.
From the periodic table:
molecular mass of hydrogen = 1 grams
molecular mass of carbon = 12 grams
molecular mass of nitrogen = 14 grams
molecular mass of oxygen = 16 grams

This means that:
molar mass of aspartame = 14(12)+18(1)+2(14)+5(16) = 294 grams
Therefore, each 294 grams of aspartame contains 5(16) = 80 grams of oxygen. To know number of grams of oxygen in 23.6 grams of aspartame, simply use cross multiplication as follows:
mass of oxygen = (23.6x80) / 294 = 6.42 grams</span>
7 0
3 years ago
Magnetism is the ability of a material to be attracted by a magnet. It also include the
Iteru [2.4K]

True

Explanation:

Magnetism is the ability of a material to be attracted by a magnet or to act like a magnetic material.

  • Magnetism is exhibited by a wide range of substances.
  • In fact, the earth behaves like a bar magnet.
  • A magnet usually have a magnetic field round them and they exert their forces in this regions.
  • Magnets are used for a wide range of functions like in fans and rotors.
  • Substances can lose their magnetic ability when exposed to high temperatures and electrically.

Learn more:

Magnet brainly.com/question/2191993

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8 0
3 years ago
What term describes gas that is compressed into a smaller space than it would normally occupy at Earth's surface?
Aloiza [94]

Pressurized gas is the term that is used to describe a gas that is compressed into a smaller space than it would normally occupy at Earth's surface.

Explanation:

The purpose of compressing a gas is to lessen its volume so that it can fit in a small space. Natural gas can be compressed using a compressor and the pressure of a compressed gas is 200 to 250 bars.

Pressurized gases are used in ground processing and space flight operations.  Pressurized gas, also known as compressed gas is also used in fuel production and in gas pipelines.

When stored in a reservoir, care must be taken to avoid leakage as these gases compressed under high pressure are highly flammable.

8 0
3 years ago
Answer ?.............
Kobotan [32]
Phosphorus chlorine
Phorsphorus pentachloride
7 0
3 years ago
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