Chemistry, 06.11.2019 20:31 ayowazzzgood

In a lab, silver nitrate, agno₃, is dissolved in water until no solid is observed in the container. then, a solution of sodium chloride, nacl, is added to the container. when you combine these aqueous solutions, there is no noticeable change in temperature; however, a solid precipitates and there is a slight change of color. which statements about the lab experiment involving silver nitrate and a sodium chloride solution are true?

a. formation of a solid indicates that a chemical reaction occurred

b. the initial disappearance of silver nitrate in water indicates a chemical reaction occurred

c. the color change of the solution indicates a chemical reaction occurred

d. a chemical reaction occurred when silver nitrate was added to water

e. a chemical reaction occurred when the solutions were combined

f. the lack of temperature change indicates a chemical reaction didn't occur

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Answer from: Anthony1442

The answer to your question is: A, C, E

Explanation:

After reading the information given, we can conclude that both reactants react to form a new solid product and another product that do not precipitate.

The reaction is:

AgNO₃ + NaCl ⇒ AgCl + NaNO₃

a. Formation of a solid indicates that a chemical reaction occurred This option is correct, precipitation indicates that a changed occurred in the solution due to a chemical reaction.

b. The initial disappearance of silver nitrate in water indicates a chemical reaction occurred No, what is happing is that silver nitrate is dissolving in water, this process is a physical change because matter do not change its nature.

c. The color change of the solution indicates a chemical reaction occurred This option is true, when a color appears suggest the formation of a new product.

d. A chemical reaction occurred when silver nitrate was added to water

This option is not correct, in this process silver nitrate is dissolving in water but it is not a chemical reaction because matter does not change is nature.

e. A chemical reaction occurred when the solutions were combined This option is true because silver nitrate and sodium chloride react to form a new product (solid formation and change in color).

f. The lack of temperature change indicates a chemical reaction didn't occur This is false, some reactions do not need a change of color to happen.

Answer from: Quest

For cyclohexane compounds drawn in a chair conformation: -axial bonds are vertical -equatorial bonds are parallel to two bonds within the ring. thus, as i assume the chair conformation is drawn: -the x group is in an axial position, as are the five other vertical bonds. -three axial bonds are on the top face of the ring -the other three axial bonds are on the bottom face the position of the second substituent on each ring carbon is equatorial. gauche groups must be on an adjacent carbon such as carbon 6 and carbon 2, and also gauche groups are rotated by 60 degrees relative to each other. drawing the newman projections for c1–c2 and c1–c6 aids in visualizing the groups that are gauche to the y group on c1. click this link and watch some academic videos that may you more understand the topic

Answer from: Quest

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In a lab, silver nitrate, agno₃, is dissolved in water until no solid is observed in the container....

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