The atomic mass of Europium is 152 amu
Work:
151(0.4803) = 72.52 amu
153(0.5197) = 79.5 amu
72.5 + 79.5 = 152 amu
Answer:
131 K
Explanation:
The only variables are volume and temperature, so we can use Charles' Law:
V1/T1 = V2/T2
Data:
V1 = 2.00 L; T1 = 210 K
V2 = 1.25 L; T2 = ?
Calculation:
2.00/210 = 1.25/T2
Multiply each side by the lowest common denominator (210T2)
2.00T2 = 1.25 ×210
2.00T2 = 262.5
T2 = 262.5/2.00 = 131 K
The gas was cooled to 131 K.
2HgO = 2Hg + O₂
n(HgO)=2n(O₂)=2m(O₂)/M(O₂)
m(HgO)=n(HgO)M(HgO)=2m(O₂)M(HgO)/M(O₂)
m(HgO)=2*250.0*216.59/32.00 = 3384.219 g ≈ 3 kg 384 g
D. tissue
The organisation is as follows:
Cell - Tissue - Organ - Organ system - Organism
have<span> 6 electrons. i hope this answer helps
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