The atomic number of sodium (na) is 11. which of the following is the correct electron configuration for this neutral atom? question 1 options: 1s22s22p63s1 1s22s22p6 1s12s12p63s3 1s22s23s24s2

Why do cells appear different in distilled water than they do in 10% salt water?

8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.

To prevent the presence of air, noble gases are placed over highly reactive chemicals to act as inert "blanketing" gases. a chemical engineer places a mixture of noble gases consisting of 4.37 g of he, 13.36 g of ne, and 36.65 g of kr in a piston-cylinder assembly at stp. calculate the partial pressure in torr of kr.