\(Q_{thu}=Q_{toả}\\ \Leftrightarrow m_1.c.\left(t-t_1\right)=m_2.c.\left(t_2-t\right)\\ \Leftrightarrow m_2=\dfrac{m_1.\left(t-t_1\right)}{t_2-t}=\dfrac{0,1.\left(40-10\right)}{85-40}=\dfrac{1}{15}\left(kg\right)=\dfrac{1000}{15}\left(g\right)\\ \Rightarrow V=\dfrac{1000}{15}\left(ml\right)\)
Cần thêm 1000/15 ml