6. Testing drivers' alcohol is an obligation should any traffic accident take place. What is the method to measure alcohol in driver's breath? If the driver refuses to take breath test, how can we measure alcohol in his blood? (20%)

4. A 0.611-g sample of an alloy containing Al and Mg is dissolved and treated to prevent interferences by the alloy's other constituents. Aluminum and magnesium are precipitated using 8-hydroxyquinoline, providing a mixed precipitate of Al(C9H6NO)3 and Mg(C9H6NO)2 that weighs 7.815 g. Igniting the precipitate converts it to a mixture of Al2O3 and MgO that weighs 1.002 g. Please calculate the %w/w Al and %w/w Mg in the alloy. (Al(C9H6NO)3: MW=459.45 g/mol； Mg(C9H6NO)2: MW=312.61 g/mol； Al: MW= 26.982 g/mol； Mg: MW= 24.305 g/mol； Al2O3: MW=101.96 g/mol； MgO: MW: 40.3044 g/mol)

6. Testing drivers' alcohol is an obligation should any traffic accident take place. What is the method to measure alcohol in driver's breath? If the driver refuses to take breath test, how can we measure alcohol in his blood? (20%)

相關申論題

相關試卷