^30 points^
dry ice pellets, the solid form of carbon dioxide, were placed in the bottom of this flask. the flask was then covered with a balloon. within 15 minutes, there was a change in the flask, as seen here. which image best provides a visual explanation of what happened to the co2 molecules?

answer choices are the images in corresponding order. first image being answer a. plz asap

First image

Explanation:

You did not show the set up, but the best answer would be the first image.

Dry ice is very cold, and when it comes into contact with the warm air, it sublimates into gas, which we know as CO₂ gas. Gas takes up more space and volume that solids, so the expansion of the gas builds up pressure. Since there is not enough space in the flask, the overflows and pushes up into the balloon.

The difference in temperature between dry ice and warm air is big, so it gives the particles a big and fast boost, which splits them apart quickly. This is why it skips the liquid phase.

the alkaline earth metals (beryllium (be), magnesium (mg), calcium (ca), strontium (sr), barium (ba), and radium (ra)) are a group of chemical elements in the s-block of the periodic table with very similar properties: shiny. silvery-white. hopefully this ? i didn't fully understand the question