WILL MARK BRAINLIEST How many moles are represented by 4.5 x 10^23 atoms of magnesium?

There are 0,75 moles of Magnesium.

Explanation:

We use Avogadro's number, according to which in 1 mole of any substance there are 6,023 x 10 e23 particles (example: atoms, molecules). We calculate the number of moles according to the following simple three rule:

6,023 x 10 e23 atoms1 mol of Magnesium

4.5 x 10e23   atomsx=

x=(4.5 x 10e23   atoms x1 mol of Magnesium)/6,023 x 10 e23 atoms

x=0,75 moles of Magnesium

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.

space exploration has led to the development and technological improvement of many everyday items. (if this answer is wrong i will find the right answer) : )