A chemistry student needs 25.0 g of 2-ethyltoluene for an experiment. He has available 150. g of a 29.5% w/w solution of 2-ethyltoluene in carbon
tetrachloride.
Calculate the mass of solution the student should use. If there's not enough solution, press the "No solution" button.

Thermohaline circulation and gyres

Higher temperature = molecules move around faster. and vice versa.

Ansa leaf changing color in autumn;

The main types of electromagnetic radiation. radio  waves have  the lowest frequencies  and  longest  wavelengths, while gamma  waves have highest frequencies  and shortest wavelengths. the wavelengths vary across the electromagnetic spectrum from about 10–15 m to more than 104 m.hope it !