Problem#1.What is the percent by mass concentration of solution that contains 6.20g of salt dissolved in 12.5g of water?

Problem#2.How many grams of glucose(C6H12O6)are needed to prepare 400ml of a 5% glucose solution?

Problem#3.Why do health practitioners recommend us to use 70% alcohol than 40% alcohol as disinfectant to fight the pandemic COVID19?



PAKI SAGOT PO NG TAMA DAHIL KUNG HINDI IREREPORT KO KAYO ​