Calculate the concentration, in mol dm–3, of a solution containing 60.0 g dm–3 of hydrogen peroxide? I do number of moles= mass/ relative molecular = 1.76 moles ( thats the correct answer) but from here wouldnt you do 1.76/ 60 = 0.0295, to get the answer ? as concentration ( moldm-3) = moles/volume?

The answer is b i think

You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.

Answerd. may include all of these are many definitions of bases: the  brønsted-lowry definition of acids and bases says that bases are proton acceptors.the arrhenius definition of acids and bases says that bases increase [oh⁻] in solution (thereby producing oh⁻ ions)the lewis definition of acids and bases says that bases donate electron pairs.therefore, the sensible answer is that a base may include all of the described characteristics.

They cool it down and aluminum cools easily