How you could separate and collect the first substance from the mixture: i) Sand and sugar ii) Ethanol and water Please helppp

1. evaporation

2.distilation

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".