Answer:
Reha should apply 540 N to lift Neha.
Explanation:
L = 360 N
LD = 60 m
E =?
ED = 40m
NOW
L * LD = E * ED
360 *60 = E*40
21600/40 = E
540 N = E
-(1/8)Δ[H2S]/Δt = -(1/4)Δ[O2]/Δt
(1/8)Δ[H2S]/Δt = (1/4)Δ[O2]/Δt
(4)*((1/8)Δ[H2S]/Δt) = (4*)((1/4)Δ[O2]/Δt)
(1/2)Δ[H2S]/Δt = Δ[O2]/Δt
(1/2))*( -0.057 M/s) = Δ[O2]/Δt
Δ[O2]/Δt = -0.0285 M/s
Answer:
0.6022×10²³ molecules
Number of moles = 0.1 mol
Explanation:
Given data:
Mass of HCl = 3.65 g
Number of molecules = ?
Number of moles = ?
Solution:
Number of moles:
Number of moles = mass/molar mass
Number of moles = 3.65 g/36.45 g/mol
Number of moles = 0.1 mol
Number of molecules:
1 mole of any substance contain 6.022×10²³ molecules
0.1 mol × 6.022×10²³ molecules/ 1 mol
0.6022×10²³ molecules
