A.) true
Because the rocks are formed near lava so the texture would be smooth
Mass of (NH₄)₂U₂O₇ : 410.05 kg
<h3>Further explanation</h3>
Reaction
2UO₂SO₄ + 6NH₃ + 3H₂O → (NH₄)₂U₂O₇ + 2(NH₄)₂SO₄
MW UO₂SO₄ : 366.091
MW (NH₄)₂U₂O₇ : 624.131
MW H₂O : 18.0153
MW NH₃ : 17.0306
mol of 100 kg water :

mol of 100 kg ammonia :

mol of UO₂SO₄ :

Limiting reactants : smallest mol ratio(mol : coefficient)

UO₂SO₄ ⇒ Limiting reactants
mol (NH₄)₂U₂O₇ : mol UO₂SO₄

mass (NH₄)₂U₂O₇

Answer:
El oxígeno, en concreto, tiene 2,6 electrones. Dichos electrones del oxígeno es la parte del número atómico que hace que la reacciones químicas del oxígeno sean de una manera determinada y, a su vez, distinta a la de otros elementos.
Ionic compounds are formed by the bonding of non-metals to metals. Because inonic bonds involve electon transfer, the result is a mixture of ions; positive and negative, following the laws of electrostatics, like charges attract. These ions then form a giant structure (lattice) of ionic bonds and it is because of this that ionic compounds are solids (unless dissolved in water) and have extremely high melting and boling temparatures. In additions, beucase of the fixed placement of ions (charged particles) in a lattice, in the solid state ionic compounds don't conduct electricity very well but if dissolved in water (aqueous solution) the ions are free to move and carry a current.
B, the height above or below sea level