How do you find the sum of valence electrons

What might you find in the exosphere?

What is the second most abundant isotope of oxygen

What would you have to do to develop a theory of atoms?

considering what you now know about boyle's law, make a prediction based on the following situation. what would happen to the pressure of a gas inside a sealed bottle, of the bottle was squeezed tightly, reducing the volume of the gas by half?

What is the molecular formula of tear?

Type of ion formed by group 2A elements

When comparing the two elements P and I, the element with the higher first ionization energy is PP When comparing the two elements P and I, the element with the higher first ionization energy is blank based on periodic trends alone.

Internal respiration is the transfer of oxygen and carbon dioxide from the lungs to the tissue cells of the body. True or False

Which element is a metalloid? 1. Al 2. Ar 3. As 4. Aa

You move a 25N object 4 meters. Find the work you did