Test Index

JAMB Physics 2023 Paper

Question : 36

Total: 65

Solution:

Let mb=mass of empty bottle,

m_w

=mass of water only and

m_a

= mass of alcohol only

given; $m_b$ =19g

m_b

m_w

= 66g

m_b

m_a

= ?

R.d=0.8

R.d=mass of alcohol

⇒ $\frac{\text{mass of alcohol}}{\text{mass of equal volume of water}}$

⇒ mass of equal volume of water = $m_w$ =66-19=47g

⇒0.8 =

\frac{m_a}{47}

⇒

m_a

=0.8×47 =37.6g

;

m_b

m_a

= 19+37.6=56.6g

Go to Question:

Prev Question

Next Question