比较1 mol氧气和1 mol一氧化碳,下列说法正确的是()
A.质量相同
B.分子总数相同
C.原子总数不同
D.氧原子总数相同
B、分子总数相同
A.质量相同
B.分子总数相同
C.原子总数不同
D.氧原子总数相同
B、分子总数相同
A.68.4~132.6μmol/L(1~1.5mg/dl)
B.68.4~132.6μmol/L(1~2.5mg/dl)
C.88.4~132.6μmol/L(1~1.5mg/dl)
D.88.4~132.6μmol/L(1~2.5mg/dl)
A.C(Ca2+,Mg2+)mmol/L
B.C(1/2Ca2+,1/2Mg2+)mmol/L
C.C(Ca2+,Mg2+)mol/L
D.C(1/2Ca2+,1/2Mg2+)mol/L
用O.02 tool·L-1KMn04溶液滴定0.1 mol·L-1:Fe2+溶液(2)用0.002 mol·L-1KMnO4溶液滴定0.01 mol·L-1Fe2+溶液上述两种情况下其滴定突跃将是()。
A.一样大
B.(1)>(2)
C.(2)>(1)
D.缺电位值,无法判断
1mol NADH + H+经交替氧化途径将电子传给氧气时,可形成
A. 4 mol ATP B.3 mol ATP C.2 mol ATP D.1 mol ATP
Which of the following will react fastest(produce most product in a given time) and which will react at the highest rate? (a) 1 mol of A and 1 mol of B in a 1 L vessel; (b) 2 mol of A and 2 mol of B in a 2 L vessel; (c) 0.2 mol of A and 0.2 mol of B in a 0.1 L vessel.