The valence electrons in an atom of phosphorus

in the ground state are all found in

(1) the first shell

(2) the second shell

(3) the third shell

(4) the fourth shell

Suppose you increase your walking speed from 4 m/s to 13 m/s in a period of 1 s. What is your acceleration? m/s2

What is 206pb and 208pb?

What is the molarity of a barium hydroxide solution if 93.9 mL is completely titrated by 15.3 mL of 0.247 M sulfuric acid solution?

Explain why there is a greater increase in effective nuclear charge from left to right across a period than there is for top to bottom in a group.

Name the type of bond in organic chemistry that corresponds to a glycoside bond

Combustion analysis of toluene, a common organic solvent, gives 8.20 mg of co2 and 1.92 mg of h2o. if the compound contains only carbon and hydrogen, what is its empirical formula?

Why does the moon have phases? What are the four main phases of the moon? How long does it take to change from one to another?

How many atoms are in 1/2 mole of calcium

Which of the following units is best when measuring the mass of an object?

When balancing an equation, should you adjust the subscripts or the coefficients?