How do you know a chemical reaction has occurred in a candle?

Whats sodium stannite? and how can it be prepared?

1) Why do astronomers use different measurement systems to discuss distance in the universe? A) Because light behaves different as the universe expands B) Because scientists are trained all over the world and there is no universal measurement system

Why is it important for an art conservation scientist to study the properties of a painting before it's repaired?

Suggest one reason why 1g of cobalt oxide nanoparticles is a better catalyst than 1g of cobalt oxide powder

A peregrine falcon can travel 537,600 furlong/fortnight. A race car travels 212ft/s. A spider can jump with a maximum velocity of 9,000,000 cm/hr. Which travels the fastest?

How many liters of 2M solution can be made using 500. grams of KI?

How many moles of copper are present in a sample of tennantite with a mass of 2370 grams

The Calvin cycle is another name for the

When a solution is considered to have a high concentration of hydrogen ions (H+) is also considered to be? a) acidic b) basic c) neutral d) hot

Why does the sky change colors at sunset? 1 because the sun changes colors 2 because the atmosphere reflects colors 3 because long wavelengths are scattered the least 4 because short wavelengths are scattered the least