The results from the alpha particle scattering experiment led to the nuclear model.
Alpha particles were fired at a thin film of gold at a speed of 7% of the speed of light.
Determine the speed of the alpha particles.
Speed of light = 300 000 000 m/s

21000000 m/s

Explanation:

Data obtained from the question:

Speed of light = 300000000 m/s

Speed of Alpha Particle =.. ?

From the question given above, the speed of the alpha particle is 7% of speed of light. Since we know the value for the speed of light, therefore, we can obtain the value for the speed of the alpha particle as follow:

Speed of Alpha Particle = 7% x speed of light

Speed of Alpha Particle = 7/100 x 300000000

Speed of Alpha Particle = 21000000 m/s

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2