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3 years ago

Which of the following compounds will produce H2O as one of the products when it decomposes?

Chemistry

2 answers:

aivan3 [116]3 years ago

8 0

B) Cu(OH) 2 Is the resulting answer when H20 is decomposed.

babunello [35]3 years ago

5 0

Cu(OH)2 will decompose to give water as one of the products

The decomposition reaction will be

Cu(OH)2(s) ----> CuO(s) + H2O(l)

Hence it is giving water as product

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If a reaction occurs, what will be the products of the unbalanced reaction below?

castortr0y [4]

Explanation:

I think the correct answer is B

Hope this helped u

8 0

3 years ago

Why are fibers birefringent

horrorfan [7]

Inevitable manufacturing imperfections in optical fiber leads to birefringence, which is one cause of pulse broadening in fiber-optic communications. Such imperfections can be geometrical (lack of circular symmetry), due to stress applied to the optical fiber and/or due to bending of the fiber.

4 0

3 years ago

Read 2 more answers

A scientist measures the standard enthalpy change for the following reaction to be 67.9 kJ:

bekas [8.4K]

Answer: The standard enthalpy of formation of $H_2O(g)$ is -252.1 kJ/mol.

Explanation:

The balanced chemical reaction is,

$Fe_2O_3(s)+3H_2(g)\rightarrow 2Fe(s)+3H_2O(g)$

The expression for enthalpy change is,

$\Delta H=[n\times H_f_{products}]-[n\times H_f_{reactantss}]$

Putting the values we get :

$\Delta H=[2\times H_f{Fe}+3\times H_f{H_2O}]-[1\times H_f{Fe_2O_3}+3\times H_f{H_2}]$

$67.9kJ=[(2\times 0)+(3\times H_f{H_2O})]-[(1\times -824.2kJ/mol)+3\times 0kJ/mol)]$

$H_f{H_2O}=-252.1kJ/mol$

Thus standard enthalpy of formation of $H_2O(g)$ is -252.1 kJ/mol.

3 0

3 years ago

which statement is true about the part of the electromagnetic spectrum that is visible to the human eye?

IgorLugansk [536]

Hello @Lucysrv18,

How are you doing? In this case, we know that Electromagnetic waves that are visible to the human eye is neither made up of two electromagnetic waves nor three. Therefore B and C is incorrect.

These electromagnetic waves are divided and they are our final two options. For sure, i can say that the wavelengths in a visible electromagnetic wave are not divided into nine, but instead it is divided into 7.

The answer to your question is A.

Thank you,
Darian D.

6 0

3 years ago

Read 2 more answers

7) How many grams of HCl will be produced with 16.2 grams of H2 and excess Cl2? H2 + Cl2 -> 2HCl

Westkost [7]

Use the atomic weights of H and Cl to calculate the answer to question 7. For H, it is 1. For Cl it is 35.45.

<span>The ratio of H to Cl in HCL is 1:1. Therefore, 16.2 grams of H means that there will be 16.2 * 35.45 grams of Cl within the resulting HCl. Therefore, the grams of HCl will be 16.2 grams + 574.29 grams = 590.5 grams of HCl</span>

8 0

3 years ago