Answer:
2 m apart
Explanation:
Two cars of mass 3000 kg are 2 m apart what is the force of gravity between them using The universal law of gravitation
<u>Answer:</u> The molecular formula of the compound is
<u>Explanation:</u>
We are given:
Empirical formula of the compound = 
For determining the molecular formula, we need to determine the valency which is multiplied by each element to get the molecular formula.
The equation used to calculate the valency is :

We are given:
Mass of molecular formula = 126 g/mol
Mass of empirical formula = ![12+(2\times 1)]=14g/mol](https://tex.z-dn.net/?f=12%2B%282%5Ctimes%201%29%5D%3D14g%2Fmol)
Putting values in above equation, we get:

Multiplying this valency by the subscript of every element of empirical formula, we get:

Hence, the molecular formula of the compound is 
Fire burning is a combustion reaction, which is a type of reaction that is always EXOthermic (meaning it gives off heat). When the carbon in the wood reacts with the oxygen in the air, it forms CO2 and H2O, releasing heat in the process that escapes the fire place and transfers out to the room.
As for the spread of heat:
“A fire can spread by radiation when the heat travels through electromagnetic waves in the air”
-FireSealsDirect