Student created a model to explain half-life during alpha decay using 50 pennies in a plastic container with the lid he began by placing all the pennies in the container with the head side facing up a closed container and shake a five times he open the container remove any panties with a tail side facing up he altered shaking the container with removing the tales pennies until the container is empty in this model what are the penny show me tails represent

Heat is the total potential energy of a substance that can be transferred. true false

Percent ionization for a weak acid (ha) is determined by the following formula: percent ionization=[ha] ionized[ha] initial×100%for strong acids, ionization is nearly complete (100%) at most concentrations. however, for weak acids, the percent ionization changes significantly with concentration. the more diluted the acid is, the greater percent ionization.a certain weak acid, ha, has a ka value of 9.4×10? 7.part acalculate the percent ionization of ha in a 0.10 m solution.part bcalculate the percent ionization of ha in a 0.010 m solution

Covalent compounds: mastery test select the correct answer what is formed when atoms join together with a covalent bond? a. an ion b. a molecule c. a neutral atom d. a noble gas