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puteri [66]
3 years ago
5

I need it done assapp

Chemistry
2 answers:
Alja [10]3 years ago
4 0

Answer:

water molecules

Explanation:

Ivenika [448]3 years ago
3 0

Answer:

State: Liquid

Explanation:

In this state molecules move freely and slide past each other.

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What is the mass percent of oxygen in sodium bicarbonate (NaHCO3)?
Alenkasestr [34]
The answer is 57.14%.

First we need to calculate molar mass of <span>NaHCO3. Molar mass is mass of 1 mole of a substance. It is the sum of relative atomic masses, which are masses of atoms of the elements.

Relative atomic mass of Na is 22.99 g
</span><span>Relative atomic mass of H is 1 g
</span><span>Relative atomic mass of C is 12.01 g
</span><span>Relative atomic mass of O is 16 g.
</span>
Molar mass of <span>NaHCO3 is:
22.99 g + 1 g + 12.01 g + 3 </span>· <span>16 g = 84 g

Now, mass of oxygen in </span><span>NaHCO3 is:
3 </span>· 16 g = 48 g

mass percent of oxygen in <span>NaHCO3:
48 g </span>÷ 84 g · 100% = 57.14%

Therefore, <span>the mass percent of oxygen in sodium bicarbonate is 57.14%.</span>
8 0
3 years ago
What is the term for the amount of energy that is needed for a chemical reaction to occur?
cupoosta [38]
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What energy resource can be used instead of fossil fuel
lozanna [386]
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How many moles are in 60.66 g CF2Cl2
mafiozo [28]
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Ammonia NH3 is a common ingredient. If you have a cleaning agent containing 3.47 mol NH3, how many grams of NH3 are in the clean
8090 [49]
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