Cho 10 gam hỗn hợp gồm Fe và Cu tác dung với dung dịch H2SO4 loãng (dư).Sau khi phản ứng thu d 2,24 lít khí hidro (ở dktc), dung dịch X và m gam chất rắn không tan. Giá trị của m là (Cho H =1,Fe=56, Cu=64)

In which environment would primary succession occur? a forest with a few remaining trees after a recent wildfire an area of exposed rock after a glacier melts away beach that is exposed to the air at low tide an abandoned baseball field in a small town

Which of these conditions most likely produces an unstable isotope?

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?