I'm so bored I wanna talk ( what is sodium chloride percentage by mass. can anybody talk)​

Sodium chloride (NaCl), also known as salt,Salt is an inorganic compound, meaning it doesn’t come from living matter. It’s made when Na (sodium) and Cl (chloride) come together to form white, crystalline cubes.

The weight of salt is usually a combination of 40 percent sodium and 60 percent chloride

Explanation:

I hope it helps you homie

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."

answer; strong state government;