You are a chemist requested to review and analyse certain debris found on thebottom of aboot found in a crime scene. The debris contains metal fragments. If you identify the metal fragments---it will help the detctive identify the locations traveled by the person who did the crime.
from the bottom of the boot---a sample of unknow metal, X(s) and react it with Oxygen gas according to the following equation: 2x(s) + O2 >>> 2XO(s)
if you react 397.2 grams of X(s) with 100.0 grams of O2(g) to produce 497.2 grams of XO(s), then what is the identity of metal X???
which is it based on the items below
iron
copper
gold
silver
lead
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To identify the metal X in this scenario, we need to determine its molar mass by using the information provided, such as the mass of X reacted with O2, the mass of O2, and the mass of XO produced.
First, let's calculate the moles of X reacted with O2 and O2 gas based on their respective masses. To obtain moles, we divide the given masses by their molar masses. The molar mass of O2 is 32 g/mol.
Mass of X(s) = 397.2 g
Moles of X = Mass of X / Molar mass of X
Mass of O2(g) = 100.0 g
Moles of O2 = Mass of O2 / Molar mass of O2
Next, we can use the balanced equation to compare the moles of X reacted with O2 and determine the ratio.
2X(s) + O2(g) → 2XO(s)
The stoichiometry of the equation indicates that 2 moles of X react with 1 mole of O2 to produce 2 moles of XO.
From the ratio obtained, we can now determine the moles of X reacted:
Moles of X = (Moles of O2) / 2
Finally, we can calculate the molar mass of X by dividing the mass of X by the moles of X:
Molar mass of X = Mass of X / Moles of X
Comparing the molar mass of X obtained with the atomic masses of the given metals—iron (Fe), copper (Cu), gold (Au), silver (Ag), and lead (Pb)—will help us identify the metal X.