Si la vela se consume uniformemente a 0,2 cm/s, ¿con qué velocidad se desplaza el extremo de la sombra que se proyecta en la pared vertical, debido a la barra opaca frente a la vela

Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night.  when he took it out, its new volume was 322 milliliters, but its pressure was the same.  if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is  kelvins.

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc