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CaHeK987 [17]
2 years ago
5

I need help with this problem please

Chemistry
1 answer:
Shtirlitz [24]2 years ago
6 0

Answer:Li2O

Explanation:  Lithium is an alkali metal in Group 1.  It has a single valence electron that it would be pleased to give up, or share, with another element.  Oxygen is in Group 16, just one removed from the halogens.  It has 6 valence electrons, and wants 2 mosr to complete it's valence shell.  One lithium will contribute 1 electron, so oxh=ygen will keep looking for a second.  If another lithium is available, it will react with that one also, resulting in Li2O.

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Which term describes the composition of matter shown in figure A
bija089 [108]

Answer:

The answer to your question is Element

Explanation:

Element is a substance whose atoms are all the same because of all the atoms

              have the same number of protons, neutrons and, electrons.

Compound is a substance formed when 2 or more atoms combined.

Mixture  is a substance formed by 2 or more different kinds of atoms or

              compounds.

Phase   is a state of matter like solid, liquid or gas.

According to the definitions, we conclude that the figure is an Element.

4 0
3 years ago
Which scenario describes an interaction between two of Earth's spheres?
quester [9]

The correct answer is D. Bears dig big holes in the ground to protect their young

Explanation:

The Earth spheres include the biosphere (life in the Earth), the hydrosphere (water bodies), the geosphere (rocks and other elements that compose land and soil), and the atmosphere (gases that compose the air). In this context, there is an interaction between two spheres: the biosphere and the geosphere, when a bear digs holes in the ground because a living organism that is part of the biosphere is modifying the structure and shape of superficial soil, which is part of the geosphere.

6 0
2 years ago
Read 2 more answers
Is salt and water suspension​
mars1129 [50]

Answer:

nah

Explanation:

l though Most Salt are soluble in water (Properties of Ionic Compound) , Not all are soluble ,which means mixing a salt and water can produce either a Solution (homogeneous mixture) or a Suspension (heterogeneous mixture).

6 0
2 years ago
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What is very fine sediment called
Alecsey [184]
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4 0
3 years ago
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A sample of a substance has a mass of 7.5 g and a volume of 2.5 cubic centimeters. What is the object’s density?
Inga [223]

Answer:

option A is the correct answer .

Explanation:

as density = mass per unit volume

density = 7.5/2.5 = 3 gm / cm³ ..is the answer ...

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7 0
2 years ago
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