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Darya [45]
4 years ago
6

What are the BASIC BUILDING BLOCKS OF PURE COMPOUNDS called

Chemistry
1 answer:
Vlad [161]4 years ago
8 0

Answer:

atoms

Explanation:

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A sample of nitrogen gas occupies 1.55 L at 27.0 degrees celsius and 1.00 atm. What will the volume be at -100.0 degress celsius
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add charges, single electron dots, and/or pairs of dots as appropriate to show the lewis symbols for the most stable ion of each
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As - 8 dots and 3- charge, Se - 8 dots and 2- charge, Br - 8 dots and 1-, K - zero dots and +1 charge, Ca - zero dots and +2 charge, Ga - zero dots and +3 charge.

<h3>In the periodic table of the elements, what is its Lewis symbol?</h3>

The valence electrons of each element are represented by dots that surround their chemical symbol in a Lewis dot symbol. The Lewis dot symbol's dots correspond to the valence electrons, which correspond to the final digit of the element's group number as in periodic table.

<h3>What's an example of a Lewis symbol?</h3>

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6 0
1 year ago
Which plant is considered an invasive species in Shenandoah National Park in Virginia?
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B) The tree-of-heaven is originally from China. It produces a chemical that prevents other plants from growing around it.

Explanation:

In ecology, a plant is said to be "INVASIVE" if it is FOREIGN or NON-NON-NATIVE to a particular region or area and also poses a great threat to the native species of that region. An invasive species, when introduced into a foreign habitat, heavily competes with the existing local species of that same habitat.

This is the case of the tree-of-heaven, which is originally from China. The tree produces a chemical that prevents other plants from growing around it. Note that this plant species is foreign to the Shenandoah National Park in Virginia as it originates from China. Likewise it harms the local or native species of the park by secreting a chemical that prevents other plants from growing around it. This characteristics portrays a plant that is INVASIVE.

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Before a forest fire, scientists observed that there were 10 different types of trees. After a forest fire, they noticed that on
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