Answer:Gold
Explanation: it is a pure element on the periodic table
~enjoy the rest of your day
There’s no choices to pick from
Answer:
The correct answer is option C.
Explanation:
Heat of formation is defined as change in enthalpy during the formation of 1 mole of compound from its constituent elements in its standard states.it is denoted by symbol . Its units are Kilo joules per mole.
- If <0, the change in enthalpy is negative then it means that energy is released during the formation of 1 mole of substance.
- If >0 , the change in enthalpy is positive then it means that energy is absorbed during the formation of 1 mole of substance.
For example:
286 kilo Joules of energy given out when 1 mole of liquid water is formed.
Answer:
5×-10^8
That is the the scintific notation for 0.00000005
Answer=5×-10^8
It proved that there was a nucleus composed of smaller, subatomic particles, or protons and neutrons.<span />