20.0 ml sample of hcl, ist te of hel is titrated with 0.0300m koh solution. the volume of potassium droxide required is 27.50ml. what is the molarity of hci solution? +koh → kci+h2o

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.

How many grams of iron can be made from 16.5 grams of fe2o3