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2 years ago

Which coefficients correctly balance the formula equation CaCo3(s) CaCo3+CO2(g)? a. 1, 1, 1 c. 2, 6, 3 b. 1, 3, 1 d. 3, 1, 2

1 answer:

8 0

Answer: option a: 1,1,1

Explanation:

1) The chemical equation given is wrong. This is the right chemical equation

CaCO3(s) → CaO(s) + CO2(g)?

2) To balance you start by counting the number of atoms of each element on both sides

element number of atoms conclusion
reactant side product side

Ca 1 1 balanced

C 1 1 balanced

O 3 1+2 = 3 balanced

3) Therefore all the elements are balanced and the coefficients are 1, 1, and 1.

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djyliett [7]

Answer:

Explanation:

The change in enthalpy of a substance when heated is given by

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2 years ago

The second reaction in the formation of sulfuric acid occurs slowly.

rjkz [21]

Answer: The correct option is $NO_2(g)$

Explanation:

A catalyst is defined as the chemical species that increases the reaction rate but does not participate in it and is left behind after the completion.

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A heterogeneous catalyst is one that is present in different phase as that of reactants and products.

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$2SO_2(g)+O_2(g)\rightarrow 2SO_3(g)$

As all the reactants and products are in gaseous state so, the homogeneous catalyst must also be in the gaseous state only.

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2 years ago

Structure of tetrazine

Vika [28.1K]

Answer:

Tetrazine is a compound that consists of a six-membered aromatic ring containing four nitrogen atoms with the molecular formula C2H2N4.

(See the image)

Hope it helps!

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2 years ago

An atom has the following electron configuration. 1s22s22p63s23p64s? How many valence electrons does this atom have? A: 2B: 3C:

Katena32 [7]

ANSWER

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STEP-BY-STEP EXPLANATION:

The electronic configuration is given below as

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Looking at the configuration, you will see that the last energy carries 2 electrons

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3 years ago

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