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vagabundo [1.1K]
4 years ago
11

What are silicates? what are silicates? silicates are extended arrays of silicon and nitrogen. they are the most common network

covalent atomic solids. silicates are extended arrays of sulfur and oxygen. they are the most common network covalent atomic solids. silicates are extended arrays of silicon and oxygen. they are the most common network covalent atomic solids. silicates are extended arrays of silicon and oxygen. they are the least common network ionic atomic solids?
Chemistry
2 answers:
Over [174]4 years ago
7 0

Answer:

silicates are extended arrays of silicon and oxygen.  

Explanation:

By definition, a silicate is a compound consisting of the chemical elements silicon (Si) and oxygen (O), derived from salicylic acid, which may be a salt or an ester. Of this group stand out the silicates formed by the alkali metals, constituent elements of Family IA of the periodic table, which are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs) and francium. (Fr), as these are water soluble and have various applications in industry and the laboratory. This list excludes the last two elements mentioned, due to their high molecular weight and their radioactivity. It is also relevant to report that salicylic acid is one of the derivatives of the second most abundant chemical element in the earth's crust, of the order of 27%, silicon (Si).

Georgia [21]4 years ago
3 0
The answer is b I think
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How do you find the number of moles of copper in copper gluconate? In my experiment I used 1.4 g of copper gluconate, and ended
Kipish [7]

<u>Answer:</u> 0.0016 moles of copper are present in copper gluconate

<u>Explanation:</u>

The number of moles is defined as the ratio of the mass of a substance to its molar mass.

The equation used is:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}} ......(1)

Given mass of copper = 0.1 g

Molar mass of copper = 63.55 g/mol

Plugging values in equation 1:

\text{Moles of copper}=\frac{0.1g}{63.55g/mol}=0.0016 mol

Hence, 0.0016 moles of copper are present in copper gluconate

7 0
4 years ago
What is the percentage by mass of silicon (si) in iron aluminum silicate (Fe3Al2(SiO4)3)?
Ilya [14]

Answer:

16.93%.

Explanation:

  • If we have 1.0  mol of Fe₃Al₂(SiO₄)₃:

∴ The mass of 1.0 mol of Fe₃Al₂(SiO₄)₃ = (no. of moles of Fe₃Al₂(SiO₄)₃)(the molecular mass of Fe₃Al₂(SiO₄)₃)

∴ The mass of 1.0 mol of Fe₃Al₂(SiO₄)₃ = (1)(the molecular mass of Fe₃Al₂(SiO₄)₃) = (the molecular mass of Fe₃Al₂(SiO₄)₃).

∴ The mass of 1.0 mol of Fe₃Al₂(SiO₄)₃ = 3(atomic weight of Fe) + 2(atomic weight of Al) + 3(molecular weight of (SiO₄)₃) = 497.7474 g.

The mass of Si in 1.0 mole of Fe₃Al₂(SiO₄)₃ = 3(atomic mass of Si) = 3(28.0855 g/mol) = 84.2565 g.

∵ The mass % of Si = (the mass of Si)/(the mass of Fe₃Al₂(SiO₄)₃) = (84.2565 g)/(497.7474 g) = 16.93%.

8 0
3 years ago
Read 2 more answers
When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 22.8g of carbon were burned in the presence of
rosijanka [135]

Answer:

83.6 g  

Explanation:

The limiting reactant is carbon and oxygen is in excess.

C + O₂ ⟶ CO₂

Data:

                  Mass of C = 22.8 g

                 Mass of O₂ = 78.0 g

Mass of unreacted O₂ =  17.2 g

Calculations:

          Mass of O₂ reacted = 78.0 g  -  17.2 g = 60.8 g

Mass of reactants (C + O₂) = 22.8 g + 60.8 g = 83.6 g

According to the Law of Conservation of Mass, the mass of the product (CO₂) equals the sum of the masses of the reactants.

The mass of CO₂ is 83.6 g.

3 0
3 years ago
Help with this please I’m really bad at this I will mark brainlist
Lorico [155]

Answer:

5 gsk

Alei

Explanation:

Bonjour comment tu

6 0
3 years ago
How many grams of CO2 are produced when 6.55 of Fe2O with an excess of CO?
Anettt [7]

Answer:

the answer is fe20 Hope this helps!

Explanation:

5 0
3 years ago
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