Assume that the volume of a balloon filled with H, is 1.00 L at 25.0°C. Calculate the volume of the balloon when it is cooled to -78.0°C in a low-temperature bath made by adding dry ice to acetone.
(3 sig figs)

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table

When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?