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Ksju [112]
3 years ago
14

How many atoms are in 4.90 mol of Al2O3

Chemistry
1 answer:
Finger [1]3 years ago
4 0

Answer:

12 g of 12C to three significant figures maybe?

Explanation:

tell if correct or not im sorry fi it isnt :c

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3. Two people are playing tug of war. One person pulls to the right with 32 N of force. The other person pulls to the left with
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The net force = -5 N

The direction : to the left(negative sign)

<h3>Further explanation </h3>

Net force : the sum of all forces acting on an object

Force is a vector quantity that has both magnitude and direction,

We agree that the move up and to the right is a positive sign, while down and to the left is a negative sign.

The direction of the force (horizontal motion) is to the right (+32 N), and to the left (-37 N), so the net force :

\tt \sum F=F~right-F~left\\\\\sum F=32-37\\\\\sum F=-5~N

5 0
2 years ago
An ostrich runs north in a straight line for 21 meters. She then turns around and runs 25 meters back toward her nest (south) on
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The ostrich runs 21 N then goes back by 25 S

The displacement is -4 S

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3 years ago
When Aluminum foil is added to a solution of Copper (II) chloride (blue color solution), the following reaction occurs.
zimovet [89]
I think is b................
7 0
2 years ago
Vitamins are food.<br> True OR False
Serga [27]

Answer:   Hello!

False

Explanation:

hope you do good!they are in ur food though

6 0
3 years ago
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How many protons are there in 20.02 mol of neon (ne)?
hodyreva [135]
In order to determine the number of protons in 20.02 mol of Ne, we use Avogadro's number to convert the number of moles to number of atoms, 1 mol = 6.022 x 10^23 atoms. From there, we must know the number of protons in a Neon atom, which is 10. Thus, the formula will be:

(20.02 mol Ne)x(6.022 x 10^23 atoms/mol)x(10 protons/1 atom Ne) =
1.2056 x 10^26 protons 
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3 years ago
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