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iren [92.7K]
3 years ago
8

If a car with an average speed of 40.

SAT
1 answer:
allsm [11]3 years ago
7 0

Answer:

If a car travels at constant speed of 40mph then it will have traveled 10miles in 15 mins (4x10=40miles). Hence, In 45 minutes the car will have reached 30miles

Explanation:

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How many moles of hcl are in 7. 80 x 1022 molecules?.
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Taking into account the definition of Avogadro's Number, 7.80×10²² molecules of HCl  are contained in 0.1295 moles of HCl.

<h3>Avogadro's Number</h3>

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 applies to any substance.

<h3>This case</h3>

Then you can apply the following rule of three: if 6.023×10²³ molecules are contained in 1 mole of HCl, then 7.80×10²² molecules are contained in how many moles of HCl?

amount of moles of HCl= (7.80×10²² molecules × 1 mole)÷ 6.023×10²³ molecules

<u><em>amount of moles of HCl= 0.1295 moles</em></u>

Finally, 7.80×10²² molecules of HCl  are contained in 0.1295 moles of HCl.

Learn more about Avogadro's Number:

<u>brainly.com/question/11907018?referrer=searchResults </u>

<u>brainly.com/question/1445383?referrer=searchResults </u>

<u>brainly.com/question/1528951?referrer=searchResults</u>

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