What is promethium used for?
I'm curious about the applications of promethium. I've heard it's a rare earth metal, but what exactly is it used for? Is it commonly found in certain products or industries?
What is official exchange rate?
I want to know the definition of official exchange rate. What does it mean and how is it determined? Is it different from other types of exchange rates?
Can I get a refund if I exchange a Dior product?
I bought a Dior product but now I want to exchange it. However, I'm not sure if I can get a refund if I choose to exchange it. Can someone clarify this for me?
What is a Canadian 5 cent coin made of?
The Canadian 5 cent coin, also known as a nickel, is typically composed of steel with a copper plating and a nickel finish. This composition has been in use since 2000, replacing the previous version made primarily of copper and nickel. The coin features a beaver on its reverse side and measures 21.2 millimeters in diameter, with a weight of 3.95 grams.
How many types of coins are there in Japan?
I'm curious about the currency system in Japan. Specifically, I want to know how many different types of coins are in circulation there. Can someone provide me with this information?