Which of the variables listed (arm length and amplitude) above do you predict will affect the pendulum’s period? How do you think the variables will affect the period

Strong conductivity of plasma allows it to act and react as and

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Stoichiometry- i need with 14 and 15! an explanation would be appreciated!