12.6/126=х/74
х=12.6*74/126=7.4
126 - Mr(2HNO3)
74- Mr (Ca(OH)2)
12.6:126=х:74
х=12.6*74:126=7.4
следует74- Mr (Ca(OH)2)
12.6/126=х/74
х=12.6*74/126=7.4
126 - Mr(2HNO3)
74- Mr (Ca(OH)2)
12.6:126=х:74
х=12.6*74:126=7.4
следует74- Mr (Ca(OH)2)
126 - Mr(2HNO3)