完成反应式(只写主要产物):
。
参考答案:
Beijing announced on Sunday that the date for events ____ the 40th anniversary of the normalization of China-Japan relations would be “adjusted to an appropriate time”.
A.marked
B.marking
C.having marked
D.to be marked
常温下,在28.9g水中溶解12.1g Cu(NO3)2·3H2O,恰好达到饱和,设该溶液密度为1.20g /cm3,
求:
(1)该溶液中Cu(NO3)2的物质的量
(2)溶液的体积
(3)该溶液中Cu(NO3)2的物质的量浓度
(4)取出20.0ml该溶液,配成浓度为1.00mol/L的稀溶液,则稀释后溶液的体积是多少毫升?