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3 years ago

What observations support the assumption that all of the iodine reacted with the zinc explain?

Chemistry

1 answer:

natita [175]3 years ago

5 0

Answer: It will lead to form a white colored product $ZnI_2$ .

Explanation: The reaction of iodine and zinc involves the direct reaction between a metal and a non-metal leading to the synthesis of a metal salt.

$Zn+I_2\overset{H_2O}{\rightarrow}ZnI_2(aq)\overset{\Delta }{\rightarrow}ZnI_2(s)$

During this reaction, heat is released (exothermic reaction) while forming Zinc Iodide( $ZnI_2$ ) which can be easily obtained by evaporating the solvent.

By looking at the stoichiometric coefficients of reactants and products, we observe that whole of the iodine has reacted with zinc.

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maria [59]

Answer:

Gas to Solid

Explanation:

A condensation reaction goes from gas to solid

Condensation is a physical change which alters the physical properties of matter particularly the form and state. In a condensation reaction, a gas goes from solid to liquid.

It is the inverse of the sublimation reaction.

It involves the loss in energy by a gas.
When gases lose energy, they become pulled together by attractive forces.
This changes their state to solid with enough loss in energy.

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2 years ago

Which model represents an element? O A. OB. O c. O D.

Readme [11.4K]

Answer: B represents an element.

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2 years ago

If the bag was made from a metal (like sturdy aluminum foil), do you think it would lose its heat faster or slower than the plas

Luden [163]

I think it would lose its heat faster than the plastic bags because of higher conductivity feature.

<h3>What is conduction?</h3>

Conduction is the process in which heat or electricity is transmitted or transferred through the material of a substance without movement of the material.

We know that metals are good conductors so we can conclude that it would lose its heat faster than the plastic bags bof higher conductivity feature.

Learn more about heat here: brainly.com/question/13439286

5 0

2 years ago

The bonds in the reactants of Figure 7-3 contained 372 kJ of chemical energy and the bonds in the products contained 350 kJ of c

satela [25.4K]

Answer: 22 kJ amount of energy is released in the following reaction.

Explanation: There are two types of reaction on the basis of amount of heat absorbed or released.

1. Endothermic reactions: These are the type of reactions in which reactants absorb heat to form the products. The energy of the reactants is less than the energy of the products.

2. Exothermic reactions: These are the type of reactions in which heat is released from the chemical reactions. The energy of the products is less than the reactants.

Sign convention for $\Delta H$ : This value is negative for exothermic reactions and positive for endothermic reactions.

For the given chemical reaction,

Energy of the products is less than the energy of the reactants, Hence, this reaction will be a type of exothermic reaction and energy will be released during this chemical change.

Amount of energy released = (350 - 372) kJ = -22kJ

Negative sign symbolizes the energy is being released. So, 22 kJ amount of energy is released in the following reaction.

6 0

2 years ago

Try try try please for me please

Inga [223]

Answer:

a.) It is a chemical reaction because a new substance was formed and a colour change occurred in the reaction.

b.) Iron- Metallic element

sulpher- Non-Metalic element

Iron Sulphide- Compound

HOPE IT HELPS....

8 0

2 years ago