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2 years ago

The chemical formula for a emerald is BeAl2(SiO3)6. An emerald can be described as

1 answer:

6 0

Emerald can be described as a transparent, green coloured gem stone made up of mineral beryl together with trace amount of chromium or sometimes vanadium having chemical formula as $Be_3Al_2(SiO_3)_6$ .

<h3>
What is the significant of Emerald ?</h3>

Through time, the emerald has been known as a symbol of truth and love.

In ancient Greece and Rome, emerald was said to be the gemstone of the goddess Venus, purveyor of love and hope.

On the other side of the world, emeralds were revered by the Incas and believed by the Egyptians to be a source of eternal life.

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PLEASE HELP FAST! When 23.3 g of O2 reacts with 18.3 g C10H8, what is the limiting reactant. The equation is C10H8 + 12O2 -->

Murljashka [212]

O₂ is the limiting reagent.

<h2>What is a limiting reactant?</h2>

A limiting reactant is described as the one that will be consumed first in a chemical reaction.

<h3>Calculation</h3>

C₁₀H₈ + 12O₂ → 10CO₂ + 4H₂O

Given, Mass of O₂ = 23.3 g

Mass of C₁₀H₈ = 18.3 g

Molar mass of O₂ = 32 g

No. of moles of O₂ = 32/23.3 = 1.4 moles

Molar mass of C₁₀H₈ = 128 g

No. of moles of C₁₀H₈ = 128/18.3 = 6.9 = 7 moles

According to the equation,

1 mole of C₁₀H₈ yields 10 moles of CO₂. So, 7 moles of C₁₀H₈, give 70 moles of CO₂.

12 moles of O₂ yields 10 moles of CO₂. So, 1.4 moles of O₂ give 1.16 moles of CO₂.

We do know, however, that based on our balanced equation, if we were to totally react all 1.4 moles of O2, we could only produce a maximum of 1.16 moles of CO2. Even while there is enough C10H8 to generate more, the amount of O2 we have is a limiting factor because it will be consumed first.

So, our limiting reactant is O₂.

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7 0

2 years ago

Read 2 more answers

Is soap more or less dense than water?

aksik [14]

The mass decreases but the volume stays the same

5 0

3 years ago

Which of following reactions shows the formation of a hydronium ion? H+ + H2O H3O+ H2O + CO2 H2CO3 NaOH Na+ + OH− H2O + NH3 OHâˆ

lesantik [10]

It can be formed by H+ ion and an H20 molecule also the chemical formula is H30+ or in other and easier way thus formula
H+ + H20=H30+

7 0

3 years ago

Read 2 more answers

How much energy in kilojoules is released when 23.4 g of ethanol vapor at 83.0 ∘C is cooled to -15.0 ∘C ?

slamgirl [31]

Answer : The amount of in kilojoules released is, -5.53 kJ

Explanation :

Formula used :

$q=m\times c\times (T_{final}-T_{initial})$

where,

q = heat released = ?

c = specific heat of ethanol = $2.41J/g^oC$

m = mass of ethanol = 23.4 g

$T_{final}$ = final temperature = $-15.0^oC$

$T_{initial}$ = initial temperature = $83.0^oC$

Now put all the given values in the above formula, we get:

$q=23.4g\times 2.41J/g^oC\times (-15.0-83.0)^oC$

$q=-5526.612J=-5.53\times 10^3J=-5.53kJ$

Therefore, the amount of in kilojoules released is, -5.53 kJ

5 0

4 years ago

What is the difference between metals and non metals on the periodic table

Vilka [71]

Answer:

On the periodic table, metals are separated from nonmetals by a zig-zag line stepping through carbon, phosphorus, selenium, iodine, and radon. ... Elements just to the left of the line may be termed metalloids or semimetals and have properties intermediate between those of the metals and nonmetals.

Explanation:

3 0

3 years ago