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in /var/www/opencart/system/library/image.php on line 127Warning: fopen(/var/www/storage/cache/cache.catalog.language.1766692172): failed to open stream: No space left on device in /var/www/opencart/system/library/cache/file.php on line 49Warning: flock() expects parameter 1 to be resource, bool given in /var/www/opencart/system/library/cache/file.php on line 51Warning: fwrite() expects parameter 1 to be resource, bool given in /var/www/opencart/system/library/cache/file.php on line 53Warning: fflush() expects parameter 1 to be resource, bool given in /var/www/opencart/system/library/cache/file.php on line 55Warning: flock() expects parameter 1 to be resource, bool given in /var/www/opencart/system/library/cache/file.php on line 57Warning: fclose() expects parameter 1 to be resource, bool given in /var/www/opencart/system/library/cache/file.php on line 59Васильев Глава 6 Задача 20
6.20. Какой объем раствора MgCl2 с массовой долей 20% (ρ=1,17 г/см3) потребуется для осаждения MgNH4PO4 из навески фосфорита массой 5,0 г, содержащего около 25% P2O5, если осадитель добавляется в полуторном количестве?
