its b magnesium and silicon
Answer:
16.5 kg
Explanation:
Compressibility - A
Flammability - B
Heat of Combustion - C
Reactivity - D
Given :
Number of molecules of .
To Find :
How many moles are in given number of molecules.
Solution :
We know, in 1 moles of any element/compound contains at atoms/molecules.
So, number of moles in molecules are :
Therefore, number of moles are 8.97 .