Is there a total of 20 bio chemical compounds true or false

Apure solvent has a vapor pressure the vapor pressure of a solution. a. equal to b. lower than c. higher than

Indicate whether the specified alkyl halides will form primarily substitution products, only elimination products, both substitution and elimination products, or no products when they react with sodium methoxide. 1-bromobutane 1-bromo-2-methylpropane 2-bromobutane 2-bromo-2-methylpropane

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.