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antiseptic1488 [7]
3 years ago
10

Use the periodic table to find the molar mass of each of the following elements. Sodium (Na): g/mol Oxygen (O): g/mol Carbon (C)

: g/mol
Chemistry
2 answers:
ruslelena [56]3 years ago
7 0
The Molar mass of an atom corresponds directly with its atomic mass on the periodic table.
Darya [45]3 years ago
4 0

Sodium (Na): 22.99  g/mol

Oxygen (O): 16.00  g/mol

Carbon (C): 12.01   g/mol

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Nady [450]

Answer:

\boxed{\text{c) 4 F}}

Explanation:

1. Write the skeleton equation for the half-reaction

NO₃⁻ ⟶ N₂O

2. Balance all atoms other than H and O

2NO₃⁻ ⟶ N₂O

3. Balance O by adding H₂O molecules to the deficient side.

2NO₃⁻ ⟶ N₂O + 5H₂O

4. Balance H by adding H⁺ ions to the deficient side.

2NO₃⁻ + 10H⁺ ⟶ N₂O + 5H₂O

5. Balance charge by adding electrons to the deficient side.

2NO₃⁻ + 10H⁺ + 8e⁻ ⟶ N₂O + 5H₂O

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4 0
3 years ago
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If an atom has 3 protons, what is its atomic number?
Andru [333]

Answer:

Atomic Number = 3.

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5 0
3 years ago
In the presence of excess oxygen, methane gas burns in a constant-pressure system to yield carbon dioxide and water: CH4 (g) 2O2
Degger [83]

Answer:

The energy released will be -94.56 kJ or -94.6 kJ.

Explanation:

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the enthalpy of reaction is given as  ΔH = -890.0 kJ

This means that when one mole of methane undergoes combustion it gives this much of energy.

Now as given that the amount of methane combusted = 1.70g

The energy released will be:

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natima [27]
It determines the electrical charge
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LenaWriter [7]

Answer:

Tin fork and knife from a camping set, a steel pole fence post, and a copper coin.

Explanation:

Hope this halps. UwUz

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