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Anomalous Expansion of Water

20. How many ...

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20. How many iron atoms are present in a stainless steel ball bearing having a radius of 0.254 cm?The stainless steel contains 85.6% iron by weight and has density of 7.75g/cm3 (centimetre cube)

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4.86 \times 10^{x}

iron atoms are present in a stainless steel ball bearing having a radius of

0.254

cm?The stainless steel contains

85.6

% Fe, by mass and has density

7.75

g/mL.
So, the value of x is......

Q. The specific gravity of the stainless steel spherical balls used in ball-bearings is

10.2

. How many iron atoms are present in each ball of diameter

1

cm if the balls contain

84 %

iron, by mass? (The atomic mass of iron is

56

Q. Stainless steel is a very useful material for our life. In stainless steel, iron is mixed with:

Q. Stainless steel contains in addition to iron -nickel and chromium which imparts:

Q. Stainless steel can protect iron from rusting as it contains:

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