2a Questão: Uma amostra de calcita, contendo 80% de carbona
2a Questão: Uma amostra de calcita, contendo 80% de carbonato de cálcio (CaCO3), sofre decomposição quando submetida a aquecimento, segundo a reação: CaCO3 -> CaO+CO2. Qual a massa de óxido de cálcio obtida a partir da queima de 450g de calcita, considerando o rendimento de 90%? (Dados: Massa Molar do CaCO3 = 100g/mol; do CaO= 56g/mol; đo CO2 = 44g/mol)
Warning: mysqli::__construct(): (HY000/1226): User 'u875436841_outros' has exceeded the 'max_connections_per_hour' resource (current value: 500) in /home/storage/8/1e/34/salvaeu1/public_html/pages/NewAnswer.php on line 21
Fatal error: Uncaught Error: mysqli object is already closed in /home/storage/8/1e/34/salvaeu1/public_html/pages/NewAnswer.php:22 Stack trace: #0 /home/storage/8/1e/34/salvaeu1/public_html/pages/NewAnswer.php(22): mysqli->set_charset('utf8') #1 /home/storage/8/1e/34/salvaeu1/public_html/pages/Question.php(408): require_once('/home/storage/8...') #2 {main} thrown in /home/storage/8/1e/34/salvaeu1/public_html/pages/NewAnswer.php on line 22