Unless you're able to provide a diagram representing the problem, there's not much I can do so solve this problem.
the fire spreading is what represents the form of heat transferring from one atom to another within an object and direct contact
That’s a hard one, but honestly i would go with a.
The first one is force and the second is acceleration.
Answer:
60.7%
Explanation:
Molar mass of NaCl = 23 +35.5
= 58.5 g/mol
Molar mass of Cl = 35.5 g/mol
Percentage by mass of Cl =?
The percentage by mass of Cl in NaCl can be obtained as shown below'
Percentage by mass = mass of element / mass of the compound × 100
Percentage by mass of Cl
= 35.5 / 58.5 × 100
= 3550 / 58.5
= 60.7%
Therefore, the percentage by mass of Cl in NaCl is 60.7%
