Calculate the percent by mass of a solution made from 17 g NaCl (the solute) and 62 g water. Units are optional.

14 days is the half-life of phosphorus-32

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.

i think its 100.

hope this !

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.