In a periodic table, dots around an elements symbol indicate the number of valence electrons in an atom? True Or False

Describe the differences between long-term and short-term environmental changes in 2-3 sentences

Is 0.49 smaller than 0.72

Why is it important to use a reaction with a high atom economy?

Chromium-52 is the most abundant isotope of chromium. How many neutrons does one atom of this isotope have?

For which of the following equilibria does Keq = [O2]? a. O2 (l) O2 (g) b. 2O3 (g) 3O2 (g) c. 2H2O (l) 2H2 (g) + O2 (g) d. 2Hg (s) + O2 (g) 2HgO (s) e. C (s) + O2 (g) CO2 (g)

How can you simulate the radioactive half-life of an element?

What are the horizontal rows on the periodic table?

What is 19 hundred thousandths in scientific notation

There state of matter that keeps its shape and volume when it is placed in a container

Our body solution tests at a pH of about 6.8. This pH is: