Which represents potential energy? A) bread baking B) lawnmower cutting grass C) car racing downhill D) weed whacker full of gas

What quantum numbers specify these subshells 5s 6p 4d?

If a moon were discovered to be at 1.5 AU from the sun, it would be how far from the sun in kilometers? a.) 22,500 km b.) 225,000 km c.) 22,500,000 km d.) 225,000,000 km

Nitrogen has an average atomic mass of 14.00674. it has two isotopes, n-14 and n-15, with atomic masses of 14.0031 amu and 15.001 amu, respectively. what is the abundance of n-15?

Heat is transferred from one place to another in three ways. which of the following is not one of the ways heat transfer occurs? a. condensation b. conduction c. convection d. radiation

Which list of elements contains a metal, a metalloid, a nonmetal, and a noble gas

Mass box A = 10 grams; Mass box B = 5 grams; Mass box C-made of one A and one B How much A and B would be needed to produce 30 grams of C? g of A; g of B.

How many moles of tin atoms are in a pure tin cup with a mass of 37.6 g?

Which best explains how Dmitri Mendeleev organized elements in his periodic table? O A. Elements were ordered based on their discovery date. O B. Elements were ordered based on their economic value. O C.

The rocks and minerals of the Earth consist of compounds.

Do the number of protons in an atom of an element always equals its atomic weight.