Un automóvil que marcha a 88 km/h está 110 m detrás de un camión que va a 75 km/h. ¿Cuánto tiempo le tomará al automóvil alcanzar al camión?
Decide whether the following statements are true or false. Explain the reason if you find them false:
a) An atom is different from an ion.
b) Atoms have more electrons than protons.
c) Two cations attract each other only if they are in contact.
d) Carbon atoms can be better conductors than potassium atoms.
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