Answer:
-Nitrogen has 5 valence electrons on the 4th shell
-nitrogen is a non metal
-
Explanation:
As it is known that molarity is the number of moles present in a liter of solution.
Mathematically, Molarity = ![\frac{no. of moles}{Volume in liter}](https://tex.z-dn.net/?f=%5Cfrac%7Bno.%20of%20moles%7D%7BVolume%20in%20liter%7D)
As it is given that molarity is 0.10 M and volume is 10.0 ml. As 1 ml equals 0.001 L. Therefore, 10.0 ml will also be equal to 0.01 L.
Hence, putting these values into the above formula as follows.
Molarity = ![\frac{no. of moles}{Volume in liter}](https://tex.z-dn.net/?f=%5Cfrac%7Bno.%20of%20moles%7D%7BVolume%20in%20liter%7D)
0.10 M = ![\frac{no. of moles}{0.01 L}](https://tex.z-dn.net/?f=%5Cfrac%7Bno.%20of%20moles%7D%7B0.01%20L%7D)
no. of moles = 0.001 mol
As molar mass of KCN is equal to 65.12 g/mol. Therefore, calculate the mass of KCN as follows.
No. of moles = ![\frac{mass}{molar mass}](https://tex.z-dn.net/?f=%5Cfrac%7Bmass%7D%7Bmolar%20mass%7D)
0.001 mol = ![\frac{mass}{65.12 g/mol}](https://tex.z-dn.net/?f=%5Cfrac%7Bmass%7D%7B65.12%20g%2Fmol%7D)
mass = 0.06152 g
Thus, we can conclude that 0.06152 grams of KCN are in 10.0 ml of a 0.10 M solution.
Answer:
7 Images
Explanation:
n = 360 / a - 1 = 360 / 45 - 1 = 8-1= 7
(Based on multiple reflections)
I hope im right!!
1 is element 2 is element 3 is compound 4 is element 5 is nothing in and water is a compound
He is Hubert Reeves. Reeves got many honors and qualifications for his work in space science and open correspondences. In 2001, he and Johannes Geiss got the Einstein prize for their work on the thickness of the Universe. Space rock 9631 was named in his respect.