What can scientists measure to provide evidence that electrons can move from one energy level to another?

When h + forms a bottle of h2o to form the hydronium ion h3o plus this bond is called a coordinate covalent bond because?

a ballon filled with helium contains 85L and 1.2 atm. the pressure is reduced to 0.22 atm at constant temperature. what is the new volume? given info: equation. work: answer

How many half-lives have passed when there are 3 times as much daughter isotope as parent isotope?

Unlike ionic bonds, covalent bonds involve the A. loss of one or more electrons from one atom to another. B. gain of one or more electrons by one atom from another. C. sharing of electrons between atoms. D.

What is the main chemical compound cells use for energy?

Which of the following organisms are carnivores? Producers Omnivores Consumers Decomposers

What is the number of moles in 2.33 L of H2S gas at STP?

Nitrous oxide (n2o), or laughing gas, is commonly used as an anesthetic in dentistry and surgery. how many moles are present in 8.4 liters of nitrous oxide at stp?

How can an atom be electrically neutral when it contains particles that are charged?

Is boiling water considered physical or chemical bond