Để hòa tan hoàn toàn 49,8 g hỗn hợp chất rắn A gồm Al và Zn cần vừa đủ 600 ml dung dịch hỗn hợp HCl 2M và H2SO4 1m a) tính khối lượng mỗi kim loại trong A
b) cho 24,9 g hỗn hợp A phản ứng với dung dịch HNO3 dư phản ứng kết thúc tạo ra 17,92 lít hỗn hợp khí x gồm NO và NO2 (đktc).Tính khối lượng muối tạo ra và số mol HNO3 đã phản ứng

To find the work done, the force exerted and distance moved are multiplied. a couch is moved twice before you are happy with its placement. the same force was used to move the couch both times. if more work is done the first time it is moved, what do you know about the distance it was moved? a) when more work was done, the couch was moved the same distance. b) when more work was done, the couch was moved less. c) when more work was done, the couch was moved further. d) when more work was done, the couch wasn't moved at all.