The spectator ions in the precipitation equation Pb(NO3)2+ 2K1 --> Pbl2 + 2KNO3 are
5
Select one:
tion
a.
K+ and l-
O b. Pb+2 and 1
O c. Pb+2 and NO3
O d. K* and NO3

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal. b. he is determining chemical properties that are sufficient to identify the metal. c. he is determining physical properties that are insufficient to identify the metal. d. he is determining chemical properties that are insufficient to identify the metal.

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.

Avolleyball player hit a ball with a mass of 0.25 kg. the average acceleration of the ball is 15.5 m/s². how much force did the volleyball player apply to the ball? 62.0 n 3.87 n 62.0 m/s² 3.87 m/s²