Can i please get help

Ascientist performs an experiment where she measures the mass of a piece of metal, pours acid onto the metal, washes the metal, and then re-measures the mass of the metal. the scientist repeats the experiment several times, each time increasing the amount of acid used. the dependent variable in the experiment is the: initial mass of the metal final mass of the metal amount of acid used washing the metal

Atsar was a russian leader in early 1900 who was similar to a?

Ineed this asapwhich practice is most likely to have been supported by conservatives in europe in the 1800s? a. all citizens were granted voting rights and allowed to apply for government jobs. b. a monarch made key political decisions based on input from advisors. c. the people elected the national leaders. d. national leaders and laws relied on legitimacy from the people.