A student carried out a titration to find the exact volume of hydrochloric acid that would neutralise 25.0 cm3 of sodium hydroxide solution. NaOH + HCl → NaCl + H2O
In a different experiment 25.0 cm3 of 0.50 mol dm-3 sodium hydroxide solution reacted with 21.65 cm3 of hydrochloric acid.
Calculate the concentration of the hydrochloric acid.
Give your answer to 2 s. f.

the correct answer is boyle

може ли да зареждате повече информация, моля

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.

gasoline is a mixture. it contains several different kinds of compounds that can be present in a variety of ratios.