Are amides ortho para directing? Activating groups (ortho or para directors) In cases where the subtituents is esters or amides, they are less activating because they form resonance structure that pull the electron density away from the ring. Are halogens meta or ortho para directors? Halogens are very electronegative. This means that inductively they are…
Category: Useful tips
How do I buy a ripple in NYC?
How do I buy a ripple in NYC? How to buy XRP Open the Atomic Wallet app. Tap on “Buy” on the bottom taskbar. Under “You send,” input how much XRP you’d like to buy and select your fiat currency. Under “You get,” select XRP. Tap on “Continue.” Please note there is a 5\% fee….
What is the most recent ancestor of humans?
What is the most recent ancestor of humans? Homo erectus Modern humans originated in Africa within the past 200,000 years and evolved from their most likely recent common ancestor, Homo erectus, which means ‘upright man’ in Latin. When was the last common ancestor of all humans? In 2004 mathematical modeling and computer simulations by a…
Is Britain only England and Wales?
Is Britain only England and Wales? Britain is the official name given to the kingdom of England and the principality of Wales. The name was made popular by the Romans when they came to the British islands. Britain is made up of: England – The capital is London. Does Britain mean England and Wales? Great…
Why dams Cannot solve water needs?
Why dams Cannot solve water needs? Off-channel dams can also use a lot of electricity as water usually needs to be pumped uphill to fill their reservoirs. In dry years, the water needed to fill a reservoir may not be available, and if there is water available, much of it will evaporate (an increasingly serious…
Do external hard drives spin when not in use?
Do external hard drives spin when not in use? Whenever the on/off switch is turned ON, the drive spins, regardless of whether it is connected to anything or not. The general rule is, if power is being applied to a drive, it will spin. That’s how they’re built, whether the drive is in an external…
What is the oldest advanced civilization?
What is the oldest advanced civilization? The Sumerian civilization is the oldest civilization known to mankind. The term ���Sumer��� is today used to designate southern Mesopotamia. In 3000 BC, a flourishing urban civilization existed. The Sumerian civilization was predominantly agricultural and had community life. What makes an advanced civilization? 5 characteristics of an advanced civilization….
What should I do if my boyfriend is allergic to my dog?
What should I do if my boyfriend is allergic to my dog? A visit to a doctor might help your boyfriend to treat his allergies. There are many medications available that help immensely with allergies. It might also help to take your dog to the vet to make sure it doesn’t have any conditions that…
What was the life expectancy in the 18th century?
What was the life expectancy in the 18th century? In the mid eighteenth century, half of all children died before age ten, and life expectancy was just 25 years. It reached 30 years at the end of the century, then jumped to 37 years in 1810, partly thanks to smallpox vaccination. It continued to increase…
Where should I stop my dog on a road trip?
Where should I stop my dog on a road trip? It’s best to restrain your dog in a carrier in the backseat that connects to a seat belt. The carrier needs to be big enough that your dog can stand up, turn around, and lie down to get comfortable. A car hammock is another good…