the relative densities of copper and stainless steel are 9.0 and 8.03 . what is the ratio of density of copper to that of steel
1. 4.5 : 4.015
2. 9.0 : 8.03
3. 11.0 : 9.05
4. 13.5 : 11.09

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Solution

Dear Student ,
As we know that the relative density of any object is the ratio of the density of the object to the density of the water .
$T h e r e f o r e, r e l a t i v e d e n s i t y o f c o p p e r = \frac{D e n s i t y o f c o p p e r}{D e n s i t y o f w a t e r} \Rightarrow d e n s i t y o f c o p p e r = r e l a t i v e d e n s i t y o f c o p p e r \times d e n s i t y o f w a t e r . S i m i l a r l y, r e l a t i v e d e n s i t y o f s t a i n l e s s s t e e l = \frac{D e n s i t y o f s t a i n l e s s s t e e l}{D e n s i t y o f w a t e r} \Rightarrow d e n s i t y o f s t a i n l e s s s t e e l = r e l a t i v e d e n s i t y o f s t a i n l e s s s t e e l \times d e n s i t y o f w a t e r . S o t h e r a t i o o f t h e d e n s i t y o f t h e d e n s i t y o f t h e c o p p e r a n d s t a i n l e s s s t e e l i s, \frac{ρ_{c}}{ρ_{s}} = \frac{9}{8 \cdot 03} \Rightarrow ρ_{c} : ρ_{s} = 9 : 8 \cdot 03$
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Similar questions

\begin{matrix} Object & Density(g/L) i. Copper & a. 8.96 ii. Mild steel & b. 7.85 iii. Water & c. 1.00 \end{matrix}

Stainless steel pans are usually provided with copper bottoms. The reason for this could be that

(a) copper bottom makes the pan more durable.

(b) such pans appear colourful.

(d) copper is easier to clean than the stainless steel.

J = 480 a m p / c m^{2}

= 6.0 \times 10^{23} a t o m s / m o l e

= 9.0 g / c m^{3}

= 64 g / m o l e

= 1.6 \times 10^{- 19}

The respective densities of copper and water are 89200 kg m⁻³ and 1000 kg m⁻³.What is the relative density of copper?

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