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4 years ago

Balance the equation. Help please!!

Chemistry

2 answers:

Tanzania [10]4 years ago

6 0

Hey there!:

Balanced equation:

5 SiO2 + 2 CaC2 = 5 Si + 2 CaO + 4 CO2

Reagents Products:

Si = 5 * 1 => 5 Si = 5* 1 => 5

O = 5 * 2 => 10 Ca = 2*1 => 2

Ca = 2 * 1 => 2 O = 2 * 1 => 2

C = 2* 2 = 4 C = 4 * 1 => 4

O = 4 * 2 => 8

Hope that helps!

Artemon [7]4 years ago

3 0

<h2>Answer:</h2>

Unbalanced equation:

SiO2 + CaC2 → Si + CaO + CO2

Balanced equation:

5SiO2 + 2CaC2 → 5Si + 2CaO + 4CO2

<h3>Explanation:</h3>

The chemical equation needs to be balanced so that it follows the law of conservation of mass.
A balanced chemical equation occurs when the number of the different atoms of elements in the reactants side is equal to that of the products side.

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Senthil wants to make a fabric that can substitute silk. Name the fabric that substitutes silk and explain the process of prepar

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Answer:

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8 0

3 years ago

uppose the reaction Ca3(PO4)2 + 3H2SO4 ï‚® 3CaSO4 + 2H3PO4 is carried out starting with 153 g of Ca3(PO4)2 and 87.6 g of H2SO4.

aleksklad [387]

The answer is 58.4 g of H₃PO₄

Given that mass of Ca₃(PO₄)₂ is 153g

mass of H₂SO₄ is 87.6g

We need to calculate the mass of H₃PO₄

So the balanced chemical reaction is

Ca₃(PO₄)₂ + 3H₂SO₄ ⇒ 3CaSO₄ + 2H₃PO₄

Let us calculate the molar mass of the reactants

Ca₃(PO₄)₂ = (3 x 40) + (2 x 31) + (8 x 16)

= 120 + 62 + 128

= 310 g

H₂SO₄ = (1 x 2) + (32 x 1) + (16 x 4)

= 2 + 32 + 64

= 98 g

Now let us calculate the limiting reactant

The Theoretical Yield = Ca₃(PO₄)₂ / H₂SO₄

= 310 / 3(98)

= 1.05

The Experimental yield

Ca₃(PO₄)₂ / H₂SO₄

= 153 / 87.6 = 1.74

Because the observed percentage was more than the predicted proportion, H2SO4 is the limiting reactant.

Let us Calculate the molar mass of H₃PO₄

H₃PO₄ = (1 x 3) + (31 x 1) + (16 x 4)

= 3 + 31 + 64

= 98 g

Now Calculate the mass of H₃PO₄

3(98) g of H₂SO₄ ------------------ 2(98) g of H₃PO₄

87.6 g of H₂SO₄ ------------------ x

x = ( 87.6 x 2 x 98) / (3 x 98)

x = 17169.6 / 294

x = 58.4g of H₃PO₄

Learn more about Theoretical Yield here

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2 years ago

Why copper should not be disposed of in landfill sites?

Dafna1 [17]

Copper is a heavy metal that can harm many people. This process of heavy metals building in your body is called bioaccumulation and the process of this building in the food chain is called biomagnification. Its hard to rid of this heavy metal because it is very dense, therefore, cannot breakdown in our bodies. Heavy metals get consumed by producers and then reach to the top of the pyramid (us) so we have the highest risk of getting diseases and so on. Make sure you explain that heavy metals get passed from industrial purposes where companies do not dispose of waste properly.
Source: Exam as well
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4 years ago

Read 2 more answers

Salad oil floats on water. Water has a density of 1.0 g/cm3. What can you say about the density of the salad oil?

pashok25 [27]

Answer:

Density of the oil is lesser than that of the water

Explanation:

The density of water is given as 1.0g/cm³.

Salad oil is found to float on water, this implies that the density of this salad oil is lesser than that of the water.

When the density of a substance is greater than another, it will sink. If the density of the salad oil is greater than that of water, then it will sink and not float.
Since the oil floats on water, the density of the oil is lesser than that of the water.

Density is the mass per unit volume of a substance.

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3 years ago