What happens when an electron moves from a higher energy level to a lower one

An imaginary gas which perfectly obeys the gas law in a (n)

How many copper atoms are in 70 grams of copper

Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride.

The part of an atom with the most empty space

A farmer has a 10 acre plot to feed his family. What is the most efficient way to use the plot? A. Grow corn and feed it to his family B. Grow corn and feed it to several cows, using the milk and meat from the cows to feed his family

a mug of boiling hot water sits next to a glass of ice water how does the movement of water molecules change in each case?

What is Charles law and how do you salve Charles law proportion? ESSAY

A compound contains 38.7% K, 13.9% N, and 47.4% O by mass. What is the empirical formula of the compound? A compound contains 38.7% K, 13.9% N, and 47.4% O by mass. What is the empirical formula of the compound?

A sample of an unknown compound was decomposed and found to be composed of 1.36 mol oxygen, 4.10 mol hydrogen, and 2.05 mol carbon.

When a transition metal reacts with chlorine, what types of bonds are formed between the two elements? A) ionic bonds B) covalent bonds C) transition bonds D) No bonds are formed.