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Goryan [66]
3 years ago
7

How many atoms make up this compound ? Help asap

Chemistry
2 answers:
Kazeer [188]3 years ago
8 0

Answer:

It is 3 atoms Na, O, and H

Explanation:

miss Akunina [59]3 years ago
3 0

Answer:

c

Explanation:

three or more atoms make up one compound

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If 4.9 kg of CO2 are produced during a combustion reaction, how many molecules of CO2 would be produced?
solmaris [256]

Answer:

6.7 x 10²⁶molecules

Explanation:

Given parameters

Mass of CO₂  = 4.9kg  = 4900g

Unknown:

Number of molecules  = ?

Solution:

To find the number of molecules, we need to find the number of moles first.

 Number of moles  = \frac{mass}{molar mass}

          Molar mass of CO₂  = 12 + 2(16)  = 44g/mol

   Number of moles  = \frac{4900}{44}  = 111.36mole

A mole of substance is the quantity of substance that contains the avogadro's number of particles.

       1 mole  = 6.02 x 10²³molecules

     111.36 moles  =   111.36 x 6.02 x 10²³molecules   = 6.7 x 10²⁶molecules

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3 years ago
Question 2(Multiple Choice Worth 4 points) (01.01 MC) Dominic and Eva are using the same type of stopwatches to measure the time
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Between atoms (one metall and one non metall) form an ionic bond(NaCl)
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How many moles are in 4.5 g of<br> Sodium Chloride, NaCl?
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The answer to the question is 0.07 moles

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