1)magnitude
2)chemical composition
3)colour temperature
4)periodicy
Answer:
hello your question is incomplete attached below is the complete question
answer : To 2 significant digits = 5500 kg
Explanation:
Given
C(s) + O2 (g) ----------> CO2 ( g )
mass of CO2 = 8.9 * 10^6 g
number of moles = 8.9 * 10^6 / 12 = 7.416 * 10 ^5 mol
same amount of moles is needed by O2 hence
attached below is the detailed solution
Answer:tetrahedral
Explanation:
According to Valence Shell Electron Pair Repulsion Theory (VSEPR). The number of electron pairs on the valence shell of the central atom in a molecule influences the shape of that molecule. Four electron pairs around the central atom of a molecule leads to a tetrahedral geometry as predicted by VSEPR.
First one is B and the second one is C
Ammonium Hydroxide is basic. At concentration of 1 mM it has a pH of 10.09. At concentration of 10 mM is has a pH of 10.61. At concentration of 100 mM it has a pH of 11.12. Hope that helps somewhat