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GuDViN [60]
3 years ago
7

As you move from left to right across the periodic table, elements____

Chemistry
2 answers:
Elodia [21]3 years ago
7 0

Answer:

electronegativity increases with the exception of the noble gases

Explanation:

in general, electronegativity decreases as you move down a group in the periodic table, this correlates neatly with the increase in distance between the atom’s nucleus and the electron valence.

tatyana61 [14]3 years ago
4 0
The reactivity of the elements decreases
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Ascientist is measuring the pressure that is exerted by each of the following gases in the atmosphere: carbon dioxide, oxygen,
Rzqust [24]

Answer:

Partial pressure

Explanation:

the scientists is measuring different pressure, so it would be partial pressure. Hope that this helps you and have a great day :)

4 0
3 years ago
Which of the following is the best example of an open system? (2 points)
Dmitriy789 [7]
1) A Car engine.............. Hope it helps, Have a nice day :)
5 0
3 years ago
Read 2 more answers
A metal sphere has a mass of 39.0g and a volume of 10.0cm is the sphere made of pure aluminum
Alisiya [41]
Note that the density of pure aluminum is  2.7 g/cm³ (from tables).

Given:
m = 39.0 g, the mass of the metal
V = 10.0 cm³, the density of the metal

By definition, the density of the metal is
density = mass/volume
             = (39.0 g)/(10.0 cm³)
             = 3.9 g/cm³

Answer:
The calculated density is not equal to 2.7 g/cm³, therefore the metal sphere is not made of pure aluminum.

3 0
3 years ago
What is a synthesis reaction? a reaction that occurs when two or more reactants combine into one product
dmitriy555 [2]

Answer:

A synthesis reaction is <em>a reaction that occurs when two or more reactants combine into one product.</em>

Explanation:

A reaction that occurs when two or more reactants combine into one product is called a synthesis reaction.

A reaction that occurs when one element within a compound is exchanged with another element is called a single replacement reaction.

A reaction that occurs when a substance combines with molecular oxygen, releasing light and energy is called combustion.

A reaction that occurs when a single substance breaks apart and forms two or more new substances is called decomposition.

7 0
3 years ago
Which feature indicates that Mars resides in the inner region of the solar system?
amm1812

Answer: The correct option is B.

Explanation: There are 2 regions of the solar system.

1) Inner region: There are 4 planets which lie in this region: Mercury, Venus, Earth and Mars. The inner region planets are rocky in nature. The orbit time of these planets around the sun is short. They have 0, 1 or 2 satellites in total. There is no ring system in these planets.

2) Outer region: There are 4 planets which lie in this region: Jupiter, Saturn, Uranus and Neptune. The outer region planets are gaseous in nature. The orbit time of these planets around the sun is long. They have usually more number of satellites around them. Ring system in these planets is very common.

Hence, Mars resides in the inner region of the solar system because it has a rocky surface that one could firmly stand on.

8 0
3 years ago
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