What color light does a hydrogen atom emit when an electron transitions from the n=6 energy level to the n=2 energy level

Scientists use their to make observations

How much sugar will dissolve in 1000 g of water at 80°c?

Use you're words to define matter

What is the pH of the lye in soap?

Convert 0.60 grams of Fe to atoms of Fe

What is the total number of grams of h2o produced when 22 grams of propane undergoes complete combustion?

Did scallops live before or after dinosaurs according to a fossil record

A stock solution of potassium permanganate (KMnO4) was prepared by dissolving 11.3 g KMnO4 with DI H2O in a 100.00-mL volumetric flask and diluting to the calibration mark. Determine the molarity of the solution.

What does the term chemistry mean?

The rate constant for the decomposition of n2o is 2.30 s-1. What is the half-life of the decomposition?