Magee Brendan

This takes me back to organic chemistry class! Ortho nitrophenol is steam volatile because of intramolecular hydrogen bonding. In the ortho isomer, the nitro group (-NO2) and hydroxyl group (-OH) are close enough to form hydrogen bonds within the same molecule. This reduces intermolecular hydrogen bonding between different molecules, which means the compound has lower boiling point and can vaporize more easily with steam. The meta and para isomers can't form these internal bonds, so they form stronger bonds between molecules and have higher boiling points.

The short answer is: Roman superstition and calendar politics! The original Roman calendar had 10 months and winter was just an unassigned period. When January and February were added around 713 BCE, February got the short end with 28 days. The Romans considered even numbers unlucky, so most months had odd-numbered days. Since February was the month of purification rituals and honoring the dead, they were fine with it having an "unlucky" even number. Later, when Julius Caesar reformed the calendar, he kept February at 28 days but added the leap year every four years to sync with the solar year.

Great question! Here's a simpler way to understand the ROM evolution: Mask ROM - "Printed" at factory (like a book printed and bound) PROM - "Write-once" by user (like burning a CD-R) EPROM - "Reusable but inconvenient" (needs UV light to erase - that little window on old chips) EEPROM - "Conveniently rewritable" (like a whiteboard you can erase and rewrite easily)Your computer's BIOS/UEFI was traditionally stored on EEPROM, which is why you can update it without replacing physical chips. Flash memory (in USB drives, SSDs) is actually a type of EEPROM but with different internal architecture for higher density and speed.

Sharing DIY recipes in Animal Crossing is super fun! The easiest way is to have your friends visit your island (or visit theirs). Once you're on the same island, just open your inventory, select the DIY recipe card you want to share, and choose "Drop Item." Your friend can then pick it up! Remember - you can't share recipes that the other player has already learned. Also, both players need Nintendo Switch Online subscriptions for online visits. For more detailed steps, check out this Animal Crossing guide.