Question

A solution contains Na2CO3 and NaHCO3. 10 mL of the solution requires 2.5 mL of 0.1 M H2SO4 for
neutralization using phenolphthalein as an indicator. Methyl orange is added when a further 2.5 mL of 0.2 M
H2SO4 was required in subsequent titration. Calculate the amount of Na,CO, and NaHCO3 in one litre o me
solution​

Answer 1

The uncertainity of a moving bullet of mass 10g is 10^-5 m. Calculate the uncertainity in its velocity?

According to uncertainty principle

Δx.Δmv = ℎ / 4π

Δv = ℎ 4πmΔ

x=6.626 × 10−34 / 4×3

=> ×14×10−2×10−5

=> 5.27×10−28 m/s ...