I believe the answer is 30 Kilograms! Hope this helps
If the magnetic toy trains are opposite charges, they will attract each other and collide however if the trains are of the same charge, they will oppose each other. This is because electrostatic force (the opposite forces so + and -) attract opposite charges
Hope that helps :)
Molar Mass of Fe₂O₃ = <span>159.69 g/mol
As we know,</span>
Moles = Mass / M.mass
Solving for Mass,
Mass = Moles × M.mass
Putting Values,
Mass = 0.50 mol ×159.69 g/mol
Mass = 79.84 g
Answer:
107.55 J, 88.67 cal
Explanation:
1 Joule = 0.239 Calories
450 cal x 0.239 = 107.55 J
3.5 x 106 = 371
371 J = 371 x 0.239 cal
371 J = 88.67 cal