Question

3. (Peso 2,0) Assinale a alternativa que indica a massa molecular do H2SO4 (Dados: H=1 u; O=16 u; S=32) a)49 u b)98 u c)108 u d)66 u e)78 u

Answer 1

$\large\boxed{\begin{array}{l}\sf m_{H_2SO_4}=2\cdot1+32+4\cdot16=2+32+64=98~u\\\huge\boxed{\boxed{\boxed{\boxed{\sf\maltese~alternativa~b}}}}\end{array}}$