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cluponka [151]
3 years ago
9

Explain how you can use an atoms mass number and atoic number to determine the number of protrons electrons and neutrons in the

atom
Chemistry
1 answer:
VMariaS [17]3 years ago
7 0
Simple!

Atomic number= number of protons AND number of electrons (in an atom)

Mass number= number of neutrons


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Convert 99 moles of CO2 to atoms
lorasvet [3.4K]

Answer:

              1.78 × 10²⁶ Atoms

Explanation:

Relation between number of molecules and moles is,

No. of Molecules = Moles × 6.022 × 10²³ Molecules/mol

No. of Molecules = 99 mol × 6.022 × 10²³ Molecules/mol

No. of Molecules = 5.96 × 10²⁵ Molecules

Also, In CO₂ Molecule there are 3 atoms.

So,

No. of atoms = 5.96 × 10²⁵ Molecules × 3

No. of atoms = 1.78 × 10²⁶ Atoms

3 0
2 years ago
What is the specific heat of iron, if it requires 1120 J of heat energy to raise the
IRISSAK [1]

Answer:

Specific heat is defined as the amount of heat needed to raise the temperature by one degree celsius. Therefore, in 1 kg there are 100 grams so, 10 grams equal 0.01 Kg. Thus, calculate the specific heat value as follows. Thus, we can conclude that specific heat of the given metal is 0.5 .

Explanation:

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2 years ago
What type of reaction is represented by the following example? 2CO2 (g) + 4H2O (l) + 1452 kJ 2CH3OH (l) (g) + 3O2 (g) exothermic
Elodia [21]

endothermic  

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8 0
2 years ago
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How does the electron structure of atoms change when they form chemical bonds
andriy [413]
For ionic bond
The metal atom will lose electrons to form cations and the non metal atom will gain electron.egNaCl
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Which molecule represents a halocarbon?
MakcuM [25]

Answer:

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Explanation:

8 0
3 years ago
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