還有呀
2.如果要配1M 的 NaoH 250ml?那要取5M的NAOH幾ml?
2006-03-06 10:13:22 · 2 個解答 · 發問者 River 1 in 科學 ➔ 化學
莫耳濃度(M) = 莫耳數/體積(升) M = (40/40)/1 = 1M 莫耳數 = 莫耳濃度x體積 = 1x0.25 = 5xV V = 0.05 升 = 50 ml
2006-03-05 18:27:12 · answer #1 · answered by Frank 7 · 0⤊ 0⤋
M=(mole數)/溶液升數
1.M=(40/40)/1=1 mol/L
M1*V1=M2*V2
2. 1*250=5*X
X=50 ml
2006-03-05 21:58:50 · answer #2 · answered by chen 2 · 0⤊ 0⤋