4. Methods scientists use to determine if a change was physical or chemical

When the concentration of solute in a solid solution exceeds its solubility limit, a new solid solution or phase forms that has a composition distinctly different than the original solid solution?

What is the electron configuration of the oxide ion (o2â€") ?

Question 1 Which of the following is a possible ground-state electron configuration? [Xe] 6s24f145d106p2 [Kr] 5s24d85p3 [Xe] 6s25d106p4 [Kr] 5s25d105p5

The chemical formula for emerald is Be3Al2 (SiO3) 6. An emerald can be described as

What partial pressure of He gas (in mm Hg) is required to maintain a solubility of 8.78*10-4 g/L in water at 25 °C? kH for He at 25 °C is 3.26*10-4 mol/L·atm.

If the average American throws away 4.5 lb of trash each day, and the population of the US is estimated to be 311 million people, calculated the number of metric tons of garbage thrown away in the US each year.

Difference between radical and compound

Water is a produced when 30.0 grams of hydrogen reacts with 80.0 grams of oxygen what is the limiting reagent

How are reactions and products related in a chemical reaction?

Ollie wants to sign up with an online social network called TeensMeet, which other kids at school have joined.