Two atoms that are different isotopes of the same element have 1) the same number of protons and the same number of neutrons
2) the same number of protons but the a different number of neutrons
3) a different number of protons but the same number of neutrons
4) a different number of protons and a different numbers of neutrons

What can be added to the examples section of each circle? endothermic: ice melting into water, and a heat pack becoming warm exothermic: a glow stick glowing, and fireworks exploding endothermic: ice melting into water, and an instant ice pack turning cold exothermic: fireworks exploding, and gasoline burning endothermic: a glow stick glowing, and a heat pack becoming warm exothermic: an instant ice pack turning cold, and ice melting into water endothermic: gasoline burning, and an instant ice pack turning cold exothermic: ice melting into water, and an instant ice pack turning cold

This large tectonic plate is bounded on three sides by whats know as the ring of fire. what is the name of this tectonic plate? a) pacific plate b) eurasian plate c) north american plate d) indo- australian plate plz it's science but there's no option for science so i picked chemistry

Calculate the molarity of 48.0 ml of 6.00 m h2so4 diluted to 0.250 l .