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Luden [163]
2 years ago
8

We must __________ forces to calculate net force if the forces are going in OPPOSITE directions.

Chemistry
1 answer:
Virty [35]2 years ago
5 0

Answer:

subtract

Explanation:

To find the net force of two bodies going in opposite directions, we must subtract the forces this is because they are not additive forces.

  • The net force is the resultant force acting on a body.
  • This resultant force is the single force that will produce the same effects as all given forces.
  • When forces are directed oppositely on a body, they are subtracted from each other to find the net force.
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6 0
2 years ago
How many atoms are in 5 GRAMS of Fe2O3
Llana [10]

There are two iron atoms and three oxygen atoms in each molecule of Fe2O3. So that's five atoms per molecule.

One mole of any molecular substance contains <span>6.02×1023</span> molecules. Since there are two iron atoms in each of the molecules we're considering, there will be <span><span>(6.02×1023)</span>⋅2=1.204×1024</span> iron atoms in a whole mole of them.

But we're considering 0.550 mol, so multiply by 0.550:

<span>n=(0.550</span> mol<span>)⋅<span>(3.01×1024</span></span> atoms/mol<span>)=6.62×1023</span> iron atoms.

6 0
3 years ago
Use the following equation to determine how many moles of C are needed to react with 0.500 mole of SO2.
Maru [420]

Answer:

The answer to your question is 1.25 moles of C

Explanation:

Reaction

                                5C  +  2SO₂   ⇒   CS₂  +  4CO

Check that the reaction is balanced

                          Reactant         Element        Product

                                5                   C                   5

                                2                    S                    2

                                4                   O                    4

Use proportions to find the moles of C needed.

                       5 moles of C -----------------  2 moles of SO₂

                       x  moles of C ----------------   0.500 moles of SO₂

                       x = (0.500 x 5) / 2

                       x = 1.25 moles of C

8 0
3 years ago
How many moles are in 68 grams of potassium sulfide (K2S)?
luda_lava [24]

Answer:No of moles of potassium sulfide (K2S)=0.61671moles

Explanation:

No of moles is given as   Mass/ molar mass

Here Mass of potassium sulfide (K2S) =68 grams

Molar mass of potassium sulfide (K2S)  = 39.0983 x 2 + 32.065 =110.2616 g/mol

No of moles =68 grams /110.2616 g/mol

=0.61671moles

4 0
2 years ago
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