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S_A_V [24]
3 years ago
13

Following a volcanic eruption which event is usualy the last one to be observed

Chemistry
2 answers:
Kay [80]3 years ago
8 0

Answer: usually the lava flowes out and starts burning down buildings and sturctures and by that happens people usually have evacutated the premises.

Explanation:

kvasek [131]3 years ago
6 0

Answer:

A. grasses begin to grow in soil with organic matter

B. tress begin to grow in thick rich soil

C. mosses begin to grow in thin rocky soil

D. lichens begin to cover bare rock

It would be B. because that comes last.

Explanation:

Whenever a volcano erupts, it puts a layer of rock over everything. Basically, over years and years, lichens will start growing and breaking down the rock. A bunch of years later, mosses will begin to grow in the "soil" that the lichens broke down. When the rocky dirt becomes actual dirt, grasses will start to grow. After that shrubs, and then trees.

Hope this helped! :)

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Name the compounds( Please answer only if you know)
IRISSAK [1]

Answer

2-methyl-2-pentene

Explanation:

1. Identify the group that takes precedence in this case alkene hence this molecule is an alkene with a methyl group side chain.

2.Find the longest carbon chain where the functional group(alkene group in this case) has the lowest Carbon number

3.What are the side groups? One side group can be seen at carbon 2 this group is methyl

4. Naming, number separated by "," and number from letters by "-" so the compound should be

2-methyl-2-pentene

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3 years ago
How would you separate the following ions by selective precipitation Ag + , Pb 2+, Cu 2+.​
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Answer:

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4 0
2 years ago
What substance melts ice the fastest science project
arlik [135]

Answer:

Salt

Explanation:

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7 0
2 years ago
La formula quimica de la molecula de agua H20 , si H = 1 gramos y O = 16 gramos . Cual es su composicion porcentual ? 88,88 % de
vesna_86 [32]

Answer:

88,88 % de O y 11,11 % de H

Explanation:

La composición porcentual se define como la masa que hay de cada mol de átomo en 100g. Las moles de agua en 100g son:

<em>Masa molar agua:</em>

2H = 2*1g/mol = 2g/mol

1O = 1*16g/mol = 16g/mol

Masa molar = 2 + 16 = 18g/mol

100g H2O * (1mol / 18g) = 5.556 moles H2O.

Moles de hidrógeno:

5.556 moles H2O * (2mol H / 1mol H2O) = 11.11 moles H

Moles Oxígeno = Moles H2O = 5.556 moles

La masa de hidrógeno es:

11.11mol * (1g/mol) 11.11g H

La masa de oxígeno es:

5.556 mol * (16g / 1mol) = 88.89g O

Así, el porcentaje de O es 88.89% y el de H es 11.11%. La opción correcta es:

<h3>88,88 % de O y 11,11 % de H</h3>
7 0
2 years ago
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Ulleksa [173]

hydrochloric Acid Carbondale

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