Na + Cl2 → NaCl A chemist reacted 17.25 grams of sodium metal with an excess amount of chlorine gas.
How many grams of NaCl will be produced? Show your work, including the use of
stoichiometric calculations and conversion factors.

Please help ASAP!

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

A5.000 g sample of niso4 h2o decomposed to give 2.755 g of anhydrous niso4. what is the formula of the hydrate? what is the full chemical name for the hydrate? what is the molar mass of the hydrate? niso4•_h2o what is the mass % of water in the hydrate?

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?