What volume of concentrated nitric acid (15.0m) is requiredfor
the preperation of 2.00 l of 0.001 m nitric acidsolution.

0.133 mL

Explanation:

Given data

We can find the volume of the concentrated solution using the dilution rule.

C₁ × V₁ = C₂ × V₂

V₁ = C₂ × V₂ / C₁

V₁ = 0.001 M × 2.00 L / 15.0 M

V₁ = 1.33 × 10⁻⁴ L = 0.133 mL

a. they are both space stations

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c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current