In an air-conditioned room at 19. 0 ∘c , a spherical balloon had the diameter of 50. 0 cm. When taken outside on a hot summer day, the balloon expanded to 51. 0 cm in diameter. What was the temperature outside in degrees celsius? assume that the balloon is a perfect sphere and that the pressure and number of moles of air molecules remains the same.

What are the two main ideas of this passage? museum experts feel that museums must change to attract visitors. museum experts care more about the number of visitors than about history. museums that display artworks and exhibits do not make families welcome. museums like colonial williamsburg make learning about the past fun. museums in the united states are different than in other countries.