Answer:
(A) 19 bars
Explanation:
First off, we calculate the mass of platinum contained in one 1 L bar. To do that we convert 1 L into cm³ -1 L equals to 1000 cm³-.
21.4 g/cm³ * 1000 cm³ = 21,400 g
Each bar of platinum weighs 21,400 grams.
Now we convert the maximum payload capacity of the truck, into grams (1 lb equals to 453,592 g):
Then we divide the weight of one bar by the maximum payload capacity:
408232.8 / 21400 =19.09
Thus the thieves could carry 19 1 L bars
The tilt of the Earth's rotational axis away or toward the sun. < 22.5°
Taking into account the definition of avogadro's number, 3.82×10⁻³ moles of H are 2.3×10²¹ particles of H.
<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 particles are contained in 1 mole of H, then 2.3×10²¹ particles are contained in how many moles of H?
amount of moles of H= (2.3×10²¹ particles × 1 mole)÷ 6.023×10²³ particles
<u><em>amount of moles of H= 3.82×10⁻³ moles</em></u>
Finally, 3.82×10⁻³ moles of H are 2.3×10²¹ particles of H.
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