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Sindrei [870]
3 years ago
6

What are the two forces that battle within a star ?

Chemistry
2 answers:
Kay [80]3 years ago
5 0

Gravity and Thermal pressure

zimovet [89]3 years ago
5 0
Pressure and gravity
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How many moles are found in 10.5 g of Pb?
deff fn [24]

Answer:

Number of moles = 0.05 mol

Explanation:

Given data:

Mass of Pb = 10.5 g

Number of moles of Pb = ?

Solution:

Formula:

Number of moles = mass/molar mass

Molar mass of Pb is 207.2 g/mol.

Now we will put the values in formula.

Number of moles = 10.5 g/207.2 g/mol

Number of moles = 0.05 mol

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