Hey there!
One mole contains 6.022 x 10²³ atoms.
We have 2 moles.
2.00 x 6.022 x 10²³ = 1.20 x 10²⁴
There are 1.20 x 10²⁴ atoms of oxygen contained in 2.00 moles of oxygen.
Hope this helps!
Isomers are compounds with different physical and chemical properties but the same molecular formula. ... Structural isomers have the same molecular formula but a different bonding arrangement among the atoms. Stereoisomers have identical molecular formulas and arrangements of atoms.
<span>A graduated cylinder was likely used in the paper. This apparatus allows for the accurate measuring of volumes of liquids in experiments. By reading the meniscus line on the cylinder, the exact amount can be found and recorded.</span>
Answer:
Gas particles are in a constant state of the random motion and move in straight lines until they collide with another body. The collisions exhibited by gas particles are completely elastic; when the two molecules collide, total kinetic energy is conserved.
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Answer: The final molarity of a 20mL- 1.3M salt solution after it has been diluted with 100ml water is 0.22 M
Explanation:
According to the dilution law,
where,
= molarity of stock solution = 1.3 M
= volume of stock solution = 20 ml
= molarity of diluted solution = ?
= volume of diluted solution = (20+100) ml = 120 ml
Putting in the values we get:
Therefore the final molarity of a 20mL- 1.3M salt solution after it has been diluted with 100ml water is 0.22 M
