Answer:
Aluminum
Explanation:
Mass of 
= 1.68 g
Molar mass of = 143.32 g/mol
Thus,
From the reaction below:
3 moles of are produced when 1 mole of 
undergoes reaction.
So,
1 mole of are produced when 
mole of undergoes reaction.
0.01172 mole of are produced when 
mole of undergoes reaction.
Thus, moles of = 0.0039 moles
Let the atomic mass of X = x g/mol
atomic mass of chlorine = 35.5 g/mol
Thus, Molar mass of = x + 3(35.5) g/mol = x + 106.5 g/mol
Moles = 0.0039 moles
Mass = 0.521 g
Thus, molar mass = Given mass/ Moles = 0.521 / 0.0039 = 133.5897 g/mol
So,
x + 106.5 = 133.5897
x = 27.0897 g/mol
This Atomic weight corresponds to Aluminum. Hence, X is aluminum.
The results of Rutherford's experiment were surprising as most of the alpha particles went straight without any deflection
<h3>Rutherford's Gold Foil experiment:</h3>
During the experiment, Rutherford directed beams of alpha particles at the thin gold foil and observed the following things:
- Most of the alpha particles passed straight without any deflection
- Few alpha particles got deflected from their paths on small angles
- Very few alpha particles got deflected from their paths on very large angles
<h3>Results of the experiment:</h3>
- Most of the space inside an atom is empty
- The center of the atom is occupied by a tiny positively charged dense body called a nucleus. Most of the mass of the atom is concentrated in the nucleus
- The electrons revolve around the nucleus in circular orbits and are called planetary electrons
Thus, the results of the experiment were surprising due to the above-stated facts.
Learn more about Rutherford's Gold Foil experiment:
brainly.com/question/4113533
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Answer:
K = 8.6x10⁻⁶
Explanation:
<em>a chemist finds that a 5.2L reaction vessel...</em>
To solve this question we need first to find the equation of the equilibrium constant using the chemical eqiation:
TiCl₄(l) ⇄ Ti(s) + 2Cl₂(g)
The equilibrium constant expression is:
K = [Cl₂]²
<em>Because equilibrium constant is defined as the ratio berween concentrationa of products over reactant powered to its reaction coefficient. But pure liquids as TiCl₄(l) and pure solids as Ti(s) are not taken into account</em>
<em />
Now, we need to find the molar concentration of Cl₂, [Cl₂]:
<em>Moles Cl₂ -Molar mass: 70.9g/mol-:</em>
1.08g * (1mol / 70.9g) = 0.0152 moles / 5.2L =
2.93x10⁻³M = [Cl₂]
K = (2.93x10⁻³)²
<h3>K = 8.6x10⁻⁶</h3>
There are 30 neutrons in a single Fe2+ atom
