Question

The cell membrane is about 7 nm thick. Express the average thickness of plasma membrane in Angstrom.(1nm=10 -9m and 1A =10 -10m) . Show the calculations

Answer 1

Answer:

$\boxed{\bf \red{7\ nm = 70\ Å }}$

Explanation:

Given that , a cell membrane is 7 nm thick . We need to Convert it into Angstrom ( Å) . It's given that , 1nano metre = 10 -⁹ m and 1 Å = 10 -¹⁰ m . We can find the realtion between the two , by dividing both , as ,

$\sf\dashrightarrow 1 \ nm = 10^{-9} m \qquad \cdots (i) \\\\\sf \dashrightarrow 1 Å = 10^{-10} m\qquad\cdots(ii)$

• Divide both of them :-

$\sf\dashrightarrow \dfrac{1\ nm}{1Å}= \dfrac{10^{-9} m}{10^{-10} m} \\\\\sf\dashrightarrow \dfrac{1\ nm}{1Å}= 10^{-9+10} \\\\\sf\dashrightarrow \dfrac{1\ nm}{1Å}=10 \\\\\sf\dashrightarrow 1 \ nm = 10Å \\\\\sf\dashrightarrow 7\ nm = 7\times 10Å \\\\\sf\dashrightarrow \boxed{\pink{\sf 7\ nm = 70\ Å }}$

$\rule{200}6$