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Fiesta28 [93]
3 years ago
15

What is atom economy?

Chemistry
1 answer:
bonufazy [111]3 years ago
5 0

Answer:

The conversion efficiency of a chemical process.

Explanation:

Hope this helps!

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a radioactive nuclide that is used for geological dating has an atomic number of 19 and mass 40. what is the symbol of this nucl
PIT_PIT [208]

The symbol of the radioactive nuclide, given the data is ⁴⁰₁₉K

<h3>Data obtained from the question</h3>
  • Atomic number = 19
  • Mass number = 40
  • Symbol of nuclide =?

<h3>How to determine the nuclide</h3>

From the question given above, the atomic number of the nuclide is 19.

Comparing the atomic number (i.e 19) of the nuclide with those in the periodic table, the nuclide is potassium with a symbol of K

<h3>How to determine the symbol of the nuclide</h3>
  • Atomic number (Z) = 19
  • Mass number (A) = 40
  • Name of nuclide = Potassium (K)
  • Symbol of nuclide =?

The symbol of a nuclide is given as ᴬ₂X

Where

  • A is the mass number
  • Z is the atomic number
  • X is the symbol of the element

Thus,

ᴬ₂X => ⁴⁰₁₉K

Therefore, the symbol of the nuclide is ⁴⁰₁₉K

Learn more about composition of atoms:

brainly.com/question/886387

#SPJ1

3 0
2 years ago
Temperature, density, and pressure ______________ (increases, decreases) as depth ____________ (increases, decreases).
Alisiya [41]

Answer:

increase/increase

Explanation:

4 0
3 years ago
Read 2 more answers
Which value indicate the strongest base<br> A. pH of 2<br> B. pH of 5<br> C. ph of 12<br> D. pH of 8
coldgirl [10]

Explanation:

The highest number is the strongest base. Therefore the pH of 12 is the strongest base here (C).

5 0
3 years ago
A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 1.79 g/mL, 1.8
Pachacha [2.7K]

Answer:

(B) Her results are both precise and accurate.

Explanation:

In Chemistry, Accuracy refers to how close a measurement is to it's standard value or known value. On the other hand, Precision means how close two measurement are to each other regardless whether the results are accurate or not.

In the above question, all the above results are very close to each other. That's why the results are Precise to each other. All the results  are close enough to the actual value of the experiment. That's why the result are also accurate.

5 0
4 years ago
How many formula units are 113.5 grams of Ca(OH)2
Sav [38]

Answer:

Molecular Formula Ca(OH)2 or CaH2O2

Synonyms CALCIUM HYDROXIDE 1305-62-0 Slaked lime Hydrated lime Ca(OH)2

Molecular Weight 74.09 g/mol

Component Compounds CID 962 (Water) CID 5460341 (Calcium)

Explanation:

8 0
3 years ago
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