Answer:
Any of the six chemical elements that markup group1
of the periodic table.
Explanation:
Answer:
A. Their numbers of atoms
Explanation:
Answer:The weight of Patterson on the moon would be less.
Explanation: It would be less because the moon has more mass.
Answer: 480 kJ of energy is released when 3.5 mol of reacts.
Explanation:
The balanced chemical reaction is:
Thus it is given that the reaction is exothermic (heat energy is released) as enthalpy change for the reaction is negative.
1 mole of on reacting gives = 137 kJ of energy
Thus 3.5 moles of on reacting gives = of energy
Thus 480 kJ of energy is released when 3.5 mol of reacts.