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aev [14]
3 years ago
13

How many atoms are in a sample of 72.8 grams calcium ?

Chemistry
1 answer:
MArishka [77]3 years ago
6 0
First find the moles
moles of the calcium= 72.8 / 40
moles of calcium in 72.8g = 1.82mol

number of atoms= moles x Avogadro constant
atoms = 1.82 x 6.02x10+23
so the number of atoms is 1.096x10+24
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To Become or cause to become incorporated into a liquid so as to form a solution.

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6 0
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4 0
3 years ago
Which of the following properties of a protein is least likely to be affected by changes in pH? Tertiary structure Primary struc
chubhunter [2.5K]

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7 0
3 years ago
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4 0
2 years ago
Help plzzzzz ASAP!!!!!!!!
SIZIF [17.4K]

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2. MgF₂, MgS, Mg₃P₂, MgO

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<h3>Further explanation</h3>

Given

Ionic charge

Required

The formula of binary ionic compounds

Solution

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Ionic compounds usually consist of metal cations and non-metal anions

Metal: cation, positively charged.

Nonmetal: negatively charged

The anion cation's charge is crossed

The ionic compounds :

1. NaF, Na₂S, Na₃P, Na₂O

2. MgF₂, MgS, Mg₃P₂, MgO

3. AlF₃, Al₂S₃, AlP, Al₂O₃

4 0
2 years ago
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