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stepladder [879]
2 years ago
10

Why is productivity greatest near the ocean’s surface

Chemistry
1 answer:
Kobotan [32]2 years ago
5 0

Answer:

Sunlight penetrates the top layers of the ocean, so photosynthesis occurs there.

Explanation:

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Fill in the coefficients that will balance the following reaction:<br> Pbl4 +CrCl₂-PbCl₂ + Crl₂
nirvana33 [79]

Answer:

see in the science book

Explanation:

see in the science book

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If 6.0g of carbon is heated in air the mass of the product obtained could be either 22.0g or 14.0g depending on the amount of ai
Gnom [1K]

In accordance with Dalton's Law of multiple proportions

<h3>Further explanation</h3>

Given

6.0g of carbon

22.0g or 14.0g of product

Required

related laws

Solution

the amount of air present ⇒ as an excess or limiting reactant

  • air(O₂) as a limiting reactant(product=14 g)

C+0.5O₂⇒CO

6 + 8 = 14 g

mol O₂=8 g : 32 g/mol=0.25

mol C = 6 g : 12 g/mol = 0.5(2 x mol O₂)

mol CO= 2 x mol O₂ = 0.5 mol = 0.5 x 28 g/mol = 14 g

  • air(O₂) as an excess reactant(product=22 g) an C as a limiting reactant

C+O₂⇒CO₂

6 + 16 = 22 g

mol C = 6 g : 12 g/mol = 0.5

mol O₂ = 16 g : 32 g/mol=0.5

mol CO₂ = 22 g : 44 g/mol = 0.5

if the mass firs element (C) constant, then the mass of the second element(O) in the two compounds will have a ratio as a simple integer.

CO = 6 : 8

CO₂ = 6 : 16

the ratio O = 8 : 16 = 1 : 2

In accordance with Dalton's Law of multiple proportions

4 0
3 years ago
Which one of these elements is an alkaline earth metal
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The answer to this problem is Beryllium is an alkaline earth metal.
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