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abruzzese [7]
4 years ago
15

What is the formula of given elements: a). Tungsten b). Lead c). Calcium d). Ziriconium​

Chemistry
2 answers:
natulia [17]4 years ago
7 0

a) Tungsten: W

b) Lead: Pb

c) Calcium: Ca

d) Zirconium: ​Zr

monitta4 years ago
4 0
_____________________________

Answer:

Elements -------> Formulae

a). Tungsten ----> W

b). Lead -----------> Pb

c). Calcium ------> Ca

d). Ziriconium --> Zr

_____________________________
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Boron has two naturally-ocurring isotopes. Boron-10 has an abundance of 19.8% and actual mass of 10.013 amu, and boron-11 has an
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Average atomic mass = 10.812 amu

Explanation:

The formula for the calculation of the average atomic mass is:

Average\ atomic\ mass=(\frac {\%\ of\ the\ first\ isotope}{100}\times {Mass\ of\ the\ first\ isotope})+(\frac {\%\ of\ the\ second\ isotope}{100}\times {Mass\ of\ the\ second\ isotope})

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