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adelina 88 [10]
3 years ago
7

Can somebody help me with this question please

Chemistry
1 answer:
Tasya [4]3 years ago
7 0

Answer:

concave lens

Explanation:

it's concave lens because it diverges the ray/beam of light.

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Group 2 in the penodic table contains the elements beryllium (Be), magnesium (Mg) , calcium (Ca) , strontium (Sf) )barium (Ba)an
mario62 [17]

Answer:

They are all alkali earth metals.

Explanation:

Their valence shell each has 2 electrons. Also, they are all shiny, silvery-white, somewhat reactive metals at standard temperature and pressure. They form alkaline solutions, hydroxides, when reacting with water and their oxides are found in the earth’s crust.

6 0
3 years ago
Western regions Facts
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The western United States is the region comprising the westernmost states of the United States. As American settlement in the U.S. expanded westward, the meaning of the term the West changed. Before about 1800, the crest of the Appalachian Mountains was seen as the western frontier.


Hope this helps :)

Have a great day!
7 0
3 years ago
Which is a characteristic of a synthesis reaction
V125BC [204]
Answer:option A
Multiple reactants are used to form one product.
8 0
3 years ago
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Is naf an acidic, basic, or neutral solution?
lara31 [8.8K]
Its a base

as Na+ dissociates in the water and it has no basic nor acidic properties its neutral]

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hope that helps 
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PLSSSSSS HELPPPPPP?????
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