\( 4 \, \text{g} \) equimolar mixture of \( \mathrm{NaOH} \) and \( \mathrm{Na_2CO_3} \) contains \( x \, \text{g} \) of \( \mathrm{NaOH} \) and \( y \, \text{g} \) of \( \mathrm{Na_2CO_3} \). The value of \( x \) is _____ \( \text{g} \). (Nearest integer)
