Answer:
0.1334
Explanation:
The number of atoms per unit (n) is given by:
The atomic packing factor (APF) is:
Answer:
+1
Explanation:
Na₂O₂
NOTE: the oxidation number of oxygen is always –2 except in peroxides where it is –1.
Thus, we can obtain the oxidation number of sodium (Na) in Na₂O₂ as illustrated below:
Na₂O₂ = 0 (oxidation number of ground state compound is zero)
2Na + 2O = 0
O = –1
2Na + 2(–1) = 0
2Na – 2 = 0
Collect like terms
2Na = 0 + 2
2Na = 2
Divide both side by 2
Na = 2/2
Na = +1
Thus, the oxidation number of sodium (Na) in Na₂O₂ is +1
well, tell maggie i said hello...and tell fred that he still owes me money from last weeks poker match.....and make sure flourence knows that everything is gonna be ok with his toe problems......thanks
Answer:
It helps us develop our obervation skills and we learn what the egg looks like. We can learn the nutritional values of the egg.
Explanation:
Hope that helped
Answer:
3%
Explanation:
We have heard about the clean water crisis, but how can that happen if earth mostly covered in water? Even though 70% of the earth is covered in water, most of those water is at ocean and has a high concentration of salt. We can't drink those water because the salt will take more water from our bodies. Freshwater only makes up about 2.5-3% water bodies while the ocean makes up 97% of the rest. Out of 3% freshwater, we have, only 1% of them that easily accessible.