Answer:
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Explanation:
For an ideal gas, we use the ideal gas equation to relate pressure, volume and temperature changes. It is expressed as:
PV=nRT
For this case, we set V, n as constant.
P/T = nR/V = constant = k
P = kT
P1/T1 = P2/T2
P1/T1 = 2P1 / T2
T2 = 2P1(T1) / P1
T2 = 2T1
Therefore, in order to double the pressure of the system, we need to double the temperature as well at constant volume and number of moles.
Magnesium iodide = MgI₂
mass of Mg = 24.3g
mass of I = 126.9g
mass of MgI₂ = 24.3 + 2*126.9 = 278.1g = 1 mole
in 5.36x10⁻⁴ mole of MgI₂ ---------------- x g of Mg
in 1 mole of MgI₂ ------------------------------ 1 mole of Mg
x = 5.36x10⁻⁴ moles of Mg = 0.000536 moles of Mg
answer: we've 0.000536 moles of Mg (magnesium ions) in 5.36x10⁻⁴ moles of MgI₂
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