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marshall27 [118]
3 years ago
5

An 18.5 g sample of tin (molar mass = 118.7) combines with

Chemistry
1 answer:
nasty-shy [4]3 years ago
5 0

Answer:

Option (B) SnS2

Explanation:

Data obtained from the question include:

Mass of Sn = 18.5 g

Mass of S = 10 g

The empirical formula of the compound can be obtained by doing the following:

Step 1:

Divide each element by their molar mass

Sn = 18.5/ 118.7 = 0.156

S = 10/ 32.07 = 0.312

Step 2:

Divide each by the smallest number

Sn = 0.156/0.156 = 1

S = 0.312/0.156 = 2

The empirical formula is SnS2

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How many grams is 2.393 x 10^24 atoms of CI
Iteru [2.4K]

Answer:

There are 140.9 grams in 2.393*10²⁴ aotms of Cl.

Explanation:

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023*10²³ particles per mole. Avogadro's number represents a quantity without an associated physical dimension, so it is considered a pure number that allows describing a physical characteristic without an explicit dimension or unit of expression. Avogadro's number applies to any substance.

Then you can apply the following rule of three: if 6.023*10²³ atoms are contained in 1 mole of the compound, 2.393*10²⁴ atoms are contained in how many moles?

amount of moles=\frac{2.393*10^{24} *1 mole}{6.023*10^{23} }

amount of moles= 3.973

If the molar mass of Cl is 35.453 \frac{g}{mole}, then the amount of mass that contains 3.973 moles can be calculated as:

3.973 moles*35.453 \frac{g}{mole}= 140.85 grams ≅ 140.9 grams

<u><em>There are 140.9 grams in 2.393*10²⁴ aotms of Cl.</em></u>

7 0
3 years ago
Most endoskeletons are made of
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hope this helps.!!!

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Read 2 more answers
A compound contains 40.0% carbon, 6.7% hydrogen, and 53.3% oxygen (by mass). calculate the empirical formula.
Eva8 [605]
C:H:O = 40/12 : 6,7/1 : 53,3/16 = 3,33 : 6,7 : 3,33 ≈ 1 : 2 : 1

CH₂O
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4 years ago
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