69,57% + 30,43% = 100%
100% ----------- 92,02g
69,57% oxygen ----- x
x = 64,004 ≈ 64,00g oxygen
100% ---------- 92,02g
30,43% nitrogen ----x
x = 27,99 ≈ 28g nitrogen
Mass of oxygen = 16g
Mass of nitrogen = 14g
moles of oxygen = 64g : 16g = 4
moless of oxygen = 28g : 14g = 2
N : O
4 : 2 ||:2
2 : 1
empirical formulas = N₄O₂
molecular formulas = N₂O
N₂ + ¹/₂O₂ ---> N2O
Answer:
The answer to your question is A.
Pure substances can not be broken down into others, so they cannot be molecules
Explanation:
Answer:
pH= 0.92
Explanation:
HNO3-> H^+ +NO3^-
HNO3 is a strong acid, so it fully dissociates
[HNO3] = 0.12M [H^+] = 0.12M
pH= -log[H^+]
pH=-log[.12] = 0.92
pH = 0.92
Answer:
Therefore, dissolving salt in water is a chemical change. The reactant (sodium chloride, or Na-Cl) is different from the products (sodium cation and chlorine anion). ... In contrast, dissolving a convalent compound like sugar does not result in a chemical reaction.
Explanation: