Energy = Planck's constant * Frequency
E = (6.62607004 × 10⁻³⁴<span>) * 7 * 10</span>¹⁴
E = 46.38 * 10⁻²⁰
E = 4.638 * 10⁻¹⁹ J
Hope this helps!
Answer is: molarity of solution is 0,5 mol/dm³.
m(NaOH) = 10,0 g.
V(NaOH) = 500 ml = 0,5 dm³.
c(NaOH) = ?
n(NaOH) = m(NaOH) ÷ M(NaOH).
n(NaOH) = 10,0 g ÷ 40 g/mol.
n(NaOH) = 0,25 mol.
c(NaOH) = n(NaOH) ÷ V(NaOH).
c(NaOH) = 0,25 mol ÷ 0,5 dm³.
c(NaOH) = 0,5 mol/dm³.
Answer:
the oxidation number of Pt in K₂PtCl₆ <u>is 4.</u>
K₂PtCl₆=0
2+x-6=0
x=4
Answer:
The velocity of flow in 10in pipe is 4.16 ft/s.
Explanation:
Given that
Specific gravity = 0.8
Viscosity =0.00042
For pipe 1

For pipe 1

If we assume that flow in the both pipe is laminar
For laminar flow through circular pipe

So same pressure drop we can say that



So the velocity of flow in 10in pipe is 4.16 ft/s.