A runner competed in a 5-mile run. How many yards did she run? Conversion Factors:
1 km = 0.6214 miles
1 km = 3280.84 ft.
3 ft = 1 yard

What is the mass of sodium in 3 moles of sodium chloride

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.