A:1 mol Cl2分别与足量的铁或氢氧化钠溶液反应,转移电子数均为2NA
B:将NA个NH3分子溶于1 L水中得到1 mol•L﹣1的氨水
C:标准状况下,22.4 L氮气与22.4 L苯所含分子数均为 NA
D:常温常压下,32gO2、O3的混合物含有2NA个氧原子
It's 6: 30. It's time to g____ up.
如图,在平面直角坐标系中,等腰直角三角形ABC的顶点B与原点O重合,顶点A、C分别在y轴、x轴的正半轴上,将Rt△ABC沿直线y=2x向上平移得到Rt△A′B′C′,纵坐标为4,若AB=BC=3,则点A′的坐标为( )
Unlike a film, __________ a passive audience watches and hears __________ is happening on the screen, Real Cine puts you into the action and connects with your senses of sight, smell and touch in an active way.