What is the correct label for a solution? a. a homogeneous mixture b. a graduated substance c. a heterogeneous mixture d. a primary mixture of elements

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

Which statement is true according to the kinetic theory? a. molecules of different gases with the same mass and temperature always have the same average density. b. molecules of different gases with the same mass and temperature always have the same average volume. c. molecules of different gases with the same mass and temperature always have the same pressure. d. molecules of different gases with the same mass and temperature always have the same molecular mass. e. molecules of different gases with the same mass and temperature always have the same average kinetic energy.

The temperature of a lead fishing weight rises from 26 °c to 38 °c as it absorbs 11.3 j of heat. what is the mass of the fishing weight in grams?