Question

A compound has the following %
composition Zn = 22.65%
S = ll.15%
0 - 61.32%
H = 4.88%
Its relative molecular mass is 287 gm.
calculate its molecular Formula asuming
that all the hydrogen in compound is
present in combination with oxygen
as water of crystallization.
​

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 ...