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3 years ago

Balance CaCO3(s) CaO(s)+CO2(g)

Chemistry

1 answer:

Whitepunk [10]3 years ago

4 0

<h3>Answer:</h3>

CaCO₃(s) → CaO(s)+CO₂(g)

<h3>Explanation:</h3>

We are required to balance the equation given;

We need to ask ourselves some questions;

What is a balanced equation?

A balanced equation is an equation that has equal number of atom of each element on both sides of the equation.

How do we balance chemical equations?

Chemical equations are balanced by putting appropriate coefficients on the reactants and products in the equation.

Why is it important to balance chemical equations?

Chemical equations are balanced to ensure they obey the law of conservation of mass.
According to the law of conservation of mass, the mass of the reactants should be equal to the mass of the products.

In this case;

The equation given is;

CaCO₃(s) → CaO(s)+CO₂(g)

The equation is balanced since the number of atoms of each element is equal on both sides of the equation.
That is, 1 calcium atom, 1 carbon atom and 3 oxygen atom on both sides of the equation.

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Woodpeckers find insects to eat by pecking holes in trees with their beaks. One day, a woodpecker finds a particular tree that o

bixtya [17]

Answer:

1. Reflex Conditioning

Explanation:

Conditioning is an aspect of learning where a stimulus works effectively in producing a response from an organism. This response becomes regular given the type of reinforcement that is administered to the organism. The reinforcement is usually a reward that is given to the organism.

This is what is observed in the woodpecker. The stimulus or reinforcement which proves effective in producing a continuous response from the woodpecker is the abundant supply of the birds favorite bugs. This reinforcement makes it possible for the woodpecker to become conditioned towards returning to the tree.

4 0

4 years ago

A tetraphenyl phosphonium chloride (TPPCl) powder (FW=342.39) is 94.0 percent pure. How many grams are needed to prepare 0.45 L

slega [8]

Answer:

5.41 g

Explanation:

Considering:

$Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}$

Or,

$Moles =Molarity \times {Volume\ of\ the\ solution}$

Given :

For tetraphenyl phosphonium chloride :

Molarity = 33.0 mM = 0.033 M (As, 1 mM = 0.001 M)

Volume = 0.45 L

Thus, moles of tetraphenyl phosphonium chloride :

$Moles=0.033 \times {0.45}\ moles$

Moles of TPPCl = 0.01485 moles

Molar mass of TPPCl = 342.39 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$0.01485\ g= \frac{Mass}{342.39\ g/mol}$

Mass of TPPCl = 5.0845 g

Also,

TPPCl is 94.0 % pure.

It means that 94.0 g is present in 100 g of powder

5.0845 g is present in 5.41 g of the powder.

<u>Answer - 5.41 g</u>

5 0

4 years ago

The acid HOCl (hypochlorous acid) is produced by bubbling chlorine gas through a suspension of solid mercury(II) oxide particles

sergejj [24]

<u>Answer:</u> The expression for equilibrium constant is $K_{eq}=\frac{[HOCl]^2}{[H_2O][Cl_2]^2}$

<u>Explanation:</u>

Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as $K_{eq}$