2. Four metals, A, B, C, and D, react spontanously with their nitrate salts as shown below: 2A NO, (aq) + B(s) → B(NO3)2(aq) + 2A(s)

C(NO3)2(aq) + B(s) → no reaction

2D NO,(aq) + C(s) → no reaction

Arrange these four metals into brief activity series such as shown in Table J of the Reference Tables for Physical setting/Chemistry ​

The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.

If 34.2 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 299 kelvin and 1.21 atmospheres? 2 li (s) + 2 h2o (l) yields 2 lioh (aq) + h2 (g)

Particles vibrate in a rigid structure and do not move relative to their neighbors.