Will someone please help me with the following question thisis urgent?
1. A salt solution is evaporated to dryness. If 74.2 g of the solution leaves 1,988 mg of dry salt, what is the percent concentration (w/w) of the salt in the solution?
2.Calculate the molarity of a sodium hydroxide if 48.72 mL ofthe solution is needed to neutralize 192 mL of 0.378 Moxalic acid. The equation for the reaction is?