Answer:
3.00x10²⁵ atoms of chromiun
Explanation:
The formula of aluminum dichromate is Al₂(Cr₂O₇)₃.
In the formula it is seen that for each molecule of the compound, we have 6 chromium atoms, so in one mole of it, there are 6 moles of chromium. With this information you can calculate the amount of chromium atoms using Avogadro's number.
Since we know that in one mole there are 6.02x10²³ molecules of aluminum dichromate, and <em>in each molecule there are 6 chromium atoms</em>, so the following relationship can be established:
1 mole Al₂(Cr₂O₇)₃ _____ 6 x (6.02x10²³) Chrome atoms
8.3 moles _____ X = 3.00x10²⁵ atoms
Calculation:
8.3 moles x [6 x (6.02x10²³)] / 1 mol = 2.9979x10²⁵ atoms ≅ 3.00x10²⁵atoms
The answer, then, is that <em>there are 3.00x10²⁵ chromium atoms in 8.3 moles of aluminum dichromate</em>
When finding empirical formulas decimals are fine so you wouldn't have to multiply all of them to turn into whole numbers. What you would do is divide each of those numbers by the smallest of those numbers and take the nearest whole number so if you had:
1.81 mol .6 mol and .3.61 mol you would divide each of those numbers by .6
and you would have 3, 1, and 6
for your problem you would divide them all by 1 and Carbon would be 2 (if your teacher normally has you round down at .5's then it would be 1) hydrogen would be 3 and oxygen would be 1.
C2H3O
The answer you're looking for is <u>B. Cell division.</u> Centrioles are involved in the development of spindle fibers in cell division. I hope that this answer helps you out!
Answer:
physical
Explanation:
if it is asking to determine what it is a sign of or how to identify that characteristic it would be a physical.
