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krek1111 [17]
3 years ago
11

True or false: scientific theories and models cannot be modified.

Chemistry
1 answer:
kondaur [170]3 years ago
8 0
False
Hope this helped
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If the pH of a solution is 6.96, then the solution is a
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acid

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solution with pH less than 7 is acid

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those equal to 7  is neutral

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Calcula la cantidad de gramos que hay en 12,5 mol de NaCl (Masa Na: 23,0; Cl: 35,5).
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Answer:

731.25 g

Explanation:

The question asks us to calculate the mass of 12.5 moles of NaCl. The individual relative atomic masses of the elements were supplied. We must first obtain the molar mass of sodium chloride as follows;

Molar mass of sodium chloride= 23.0 + 35.5 = 58.5 gmol-1

From the formula;

Number of moles (n) = mass /molar mass

Number of moles of sodium chloride= 12.5 moles

Mass of sodium = The unknown

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Mass of sodium chloride= number of moles × molar mass

Mass of sodium chloride= 12.5 × 58.5

Mass of sodium chloride= 731.25 g

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It’s either b or d, maybe d?

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The  balanced  equation  for  reaction  of  chlorine  gas  with   fluorine  gas  is  written  as  follows

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