rainboworld5214 rainboworld5214
  • 18-10-2017
  • Chemistry
contestada

How many aluminum atoms are in 3.78 g of aluminum?

Respuesta :

ejelonubenedict
ejelonubenedict ejelonubenedict
  • 18-10-2017
molar mass of aluminum = 26.982 g/mol.
1 mol of Al = 26.9≈27g = 6.02×10²³ atoms [ avogadro's number]
meaning
1 g | Al = 6.02/27 × 10²³ atoms
so 3.78g | Al = 6.02×3.78]/27 ×10²³
= 0.8428 ×10²³ atoms
= 8.428 ×10²² atoms
Answer Link

Otras preguntas

Test for symmetry and then graph the polar equation.r=3−5sinθ
The lines shown below are parallel. If the green line has a slope of -2, what is the slope of the red line?
Can someone please help a struggling physics student? A Physics student is running an experiment to test the kinematic equations that she learned over the week.
Help once again thanks! !!!!!!!
Which elements does strong narrative writing always contain
Help me with this, i'm confused.
Which of the following groups includes a protozoan that is transmitted sexually? A.) Chromalveolata B.) Amoebazoa C.) Excavata D.) Archaeplasteda E.) Rhizaria
The denominator of a fraction is 5 more than the numerator. if both the numerator and denominator are increased by 3, the the resulting fraction becomes 3/4. fi
A flower bed is in the shape of a triangle with one side twice the length of the shortest side and a third side is 22 more than the length of the shortest side.
In the late nineteenth century, a number of people from European countries moved to the United States. The act of moving to one nation from another is called .