Chemistry, 08.07.2019 23:40 treestump090

Limestone (caco3) is decomposed by heating to quicklime (cao) and carbon dioxide. calculate how many grams of quicklime can be produced from 5.0 kg of limestone.

Answers: 2

Show answers

Answers

A decomposition reaction splits the reactants into two or more products. The mass of the quicklime produced from 5 kg of limestone is 2800 gm.

What is mass?

Mass is the amount or the weight of the substance occupied in the system. It can be calculated in grams or kilograms.

The decomposition reaction of the Limestone can be shown as:

$\rm CaCO_{3} \rightarrow CaO + CO_{2}$

The number of the mole of limestone is given as:

$\rm Moles = \rm \dfrac {Mass}{Molar \;mass}$

Here, mass is 5000 gm and the molar mass is 100 g/mol

Substituting values in the equation above:

$\begin{aligned}\rm n &= \dfrac{5000}{100}\\\\&= 50\;\rm mol\end{aligned}$

The stoichiometry coefficient of the reaction gives:

1 mole of limestone = 1 mole quicklime

So, 50 moles of limestone = x moles of quicklime

Solving for x:

$\begin{aligned}\rm x &= \dfrac{50 \times 1}{1}\\\\&= 50 \;\rm mole\end{aligned}$

Mass of quicklime is calculated as:

$\begin{aligned}\rm mass &= \rm moles \times \rm molar \; mass\\\\&= 50 \times 56\\\\&= 2800\;\rm gm\end{aligned}$

Therefore, 2800 gm of quicklime is produced.

Learn more about moles and mass here:

link

Answer from: jazminemartinez3223

2800 g

Explanation:

$CaCO_3(s)\rightarrow CaO(s)+CO_2(g)$

According to avogadro's law, 1 mole of every substance weighs equal to molecular mass and contains avogadro's number $6.023\times 10^{23}$ of particles.

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Given mass = 5 kg = 5000 g

$\text{Number of moles}=\frac{5000g}{100g/mol}=50moles$

1 mole of CaCO_3 produces = 1 mole of CaO

50 moles of CaCO_3 produces = $\frac{1}{1}\times 50=50moles$ of CaO

Mass of $CaO=moles\times {\text{Molar mass}}=50moles\times 56g/mole=2800g$

2800 g of CaO is produced from 5.0 kg of limestone.

Answer from: Quest

B? i feel like this is a trick

Answer from: Quest

Following are the advantages of the parametric equations: 1) they can be used to graph curves that are not functions, like the unit circle.2) the parameter can be used to represent the quantity that is useful to provide us with better information about the graph.3) it is useful to convert between rectangular equations and parametric equations.with specific reference to chemistry, parametric equations are employ for solving hydrogen and hydrogen-like ions, quantum mechanically. herein, cartesian coordinates are converted in spherical polar coordinates. the solution obtained, when plotted on spherical polar graph paper, provides visualization of atomic orbital such as s,p,d and f.

Another question on Chemistry

Chemistry, 22.06.2019 07:30

11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg

Answers: 3

Answer

Chemistry, 22.06.2019 13:00

What must occur for air masses to form fronts

Answers: 3

Answer

Chemistry, 22.06.2019 15:00

How is the shape of the poem “peer” connected to its meaning?

Answers: 2

Answer

Chemistry, 23.06.2019 01:00

If a sample of radioactive isotopes takes 600 minutes to decay from 400 grams to 50 grams, what is the half-life of the isotope?