Why does the colour of copper sulphate solution change when
an iron nall Is dipped in it?​

During wwi, literacy tests were used to control immigration, which marked a return of what type of ideology in some americans?

Which statement best explains how the invention of corporations contributed to the economy in the 1800's

True or false: after the bonus army demonstrated around the capitol and lobbied senators, the senate passed the bonus billwhat did fdr speak to the american people about in his first fireside chat? how did the new deal assist workers? select all that apply.a, by funding public works projects b. by mandating an eight-hour dayc, by guaranteeing an income raise for alld, by guaranteeing a higher stock market