When a small piece of copper metal is added to a silver nitrate solution, the following reaction occurs: 2Ag+NO3+Cu → Cu (NO3)2+2Ag

This equation both represents both a single replacement reaction AND a(n) reaction.

A. combustion
B. decomposing
C. neutralization
D. oxidation-reduction

Explanation:

Copper is more reactive than silver.

When copper reacts with AgNO3, Cu displaces Ag from AgNO3, forming Cu(NO3)2.

Chemical reaction -

It's a displacement reaction as well as redox reaction.

Reasons are :

The Oxidation number of Cu changes from 0 to 2 so it's oxidized.

Oxidation number of Ag changes from 1 to 0 so it's reduced.

So, it's also a redox reaction.

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.