【单选题】下列叙述正确的是( )
A.
1 mol H 2 SO 4 的质量为98g·mol - 1
C.
6.02×10 22 个H 2 SO 4 分子的质量为9.8g
D.
9.8 g H 2 SO 4 含有6.02×10 23 个H 2 SO 4 分子
【单选题】The CMR convention is the convention on contract for international carriage of goods by( ).
【单选题】在高效液相色谱柱中,色谱柱的长度一般在( )范围内
【单选题】The CMR convention is the convention on contract for international carriage of goods by road, according to the CMR, the career is responsible for( ).
A.
any wrongful act of the consignor
B.
inherent vice of the goods
C.
neglect of the consignor
D.
omissions of carrier' s servants
【简答题】The CMR convention is the convention on contract for international carriage of goods by road, according to the CMR,the carrier is responsible for( ).
【简答题】(8分)H 2 SO 4 的摩尔质量是 ,196g H 2 SO 4 的物质的量是 ,其中含有 g O和 molH。
【单选题】在高效液相色谱中,色谱柱的长度一般是( )
【单选题】下列叙述中正确的是
D.
将98gH 2 SO 4 溶解于500 mL水中,所得溶液中H 2 SO 4 的物质的量浓度为2 mol/L
【简答题】The CMR convention is the convention on contract for international carriage of goods by( ) which was adopted in 1 956.