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4vir4ik [10]
3 years ago
10

If two forces are heading in the same direction, we ______ them to calculate net force.

Chemistry
1 answer:
steposvetlana [31]3 years ago
5 0

Answer:

add

Explanation:

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4 years ago
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Determine the moles of chlorine needed to react with 38.9 of iron (III) chloride.
lys-0071 [83]

Answer: 0.360 moles

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}

\text{Moles of} FeCl_3=\frac{38.9g}{162.2g/mol}=0.240moles

The balanced chemical reaction is:

2Fe+3Cl_2\rightarrow 2FeCl_3  

According to stoichiometry :

2 moles of require = 3 moles of

Thus 0.240 moles of FeCl_3 will require=\frac{3}{2}\times 0.240=0.360moles of Cl_2

Thus 0.360 moles of chlorine needed to react to produce 38.9 of iron (III) chloride.

6 0
3 years ago
The method used to determine the equivalence point of an acid-base solution is called:
Sveta_85 [38]

Answer is: B) titration.

Equivalence point is the point in which there is stoichiometrically equivalent amounts of acid and base.  

Chemist can draw pH curve (graph showing the change in pH of a solution, which is being titrated) for titration and determine equivalence point.

The midpoint of a steep vertical section indicates the equivalence point



8 0
3 years ago
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