Answer:
chemical change occur when a substance combines with another to form a new substance.
Explanation:
hope this helps ;)
Answer: mass of chlorine reacted is 3.18 g
Explanation:
2 K + Cl2 = 2KCl
no. of moles of K = mass / molar mass
= 3.50 / 39
= 0.0897
no. of moles of KCl = mass / molar mass
= 6.67 / 74.5
= 0.0895
no. of moles of Cl2 required = number of moles of KCl / 2
= 0.0895 / 2
= 0.0448 moles
mass of Cl2 required = no. of moles of Cl2 required x molar mass
= 0.0448 x 71
= 3.1808 g ≈ 3.18 g
Therefore mass of chlorine reacted is 3.18 g
N=N/Na
----. N=nxNa=3x6.023x10^23=<span>1.8069e+24</span>
Answer: It would be A and C
Explanation: I did the test and got it right. Hope this helps!
