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Vaselesa [24]
3 years ago
11

1)

Chemistry
1 answer:
Aleks [24]3 years ago
8 0

Answer:

c

Explanation:

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Inside a volcano how do the slanted layers of hardened lava get there
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This is a build up of lava which came out of the volcano in previous eruptions, once this lava came out of the volcano it cooled and hardened, over many eruptions layers of hardened volcanic rock will form. The layers are slanted as gravity acts on the lava so it flows down and a little further from the cone.
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3 years ago
Consider the neutralization reaction that takes place when hydrochloric acid reacts with aqueous calcium hydroxide
Galina-37 [17]
2HCl + Ca(OH)2 -------> CaCl2 + 2H2O
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3 years ago
Find the mass of oxygen in grams produced by the decomposition of 100.0 g of CO2
SSSSS [86.1K]

The balanced chemical equation is :

2CO_2->2CO+O_2\\\\

Moles of CO_2 ,

n = \dfrac{100\ g}{44.01\ g/mol}\\\\n=2.27\ mol

Now, by given chemical equation , we can see 2 mole of CO_2 react with 1 mole of O_2.

So , 2.27 mole react with :

N=\dfrac{2.27}{2}\ mol\\\\N=1.135\ mol

Mass of oxygen is :

M = N \times 16\\\\M=1.135\times 16\ g\\\\M =18.16\ g

Therefore, mass of oxygen in grams produced is 18.16 g.

Hence, this is the required solution.

7 0
3 years ago
The _ and _ are part of the digestive system. chose ONE from each of these list.
lina2011 [118]

Answer:

liver and esophagus.

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4 0
3 years ago
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To determine the specific heat capacity of copper, Alyssa performed an investigation by which she dropped a heated piece of copp
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Answer:

0.446

Explanation:

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