What is the percent composition of compound that has a total mass of 63.9 g that contains 51.0 g cu and 12.9 g o?

Will give brainliest it is a lab from k12 here is the linkfor each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. type your answer here. (score for question 3: of 5 points) were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. type your answer here. (score for question 4: of 5 points) make a general statement about the reactivity of the metals in this experiment. type your answer here.

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

What royal scientist used the 29th day of frozen vapor to encounter elements for mastering new culinary creations?