Read the sentence.
Even the social studies teacher herself could not find the
answer to the tough question,
In this sentence, "herself" is used as
O a personal pronoun.
O an object pronoun.
O a reflexive pronoun.
O an intensive pronoun

Its intensive if not reflextve..

Explanation:

intensive is right i took the test

Explanation:

the temperature in kelvin of 2.0 dm3 of an ideal gas is doubled and its pressure is increased by a factor of four. what is the final volume of the gas