If a drop of NaOH solution is dispensed from the burette but adheres to the side of the Erlenmeyer flask during standardization, then the calculated molarity of NaOH will be

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.

they are all solids.

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.