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The Delta. Hrxn of formation of carbon dioxide is negative. Which statement is true?
The reaction is endothermic.
The reaction is exothermic.
The amount of carbon dioxide is more than the amount of reactants.
The amount of carbon dioxide is less than the amount of reactants.

Which of the following true? a_volcanoes and earthquakes often near the plate boundaries. b_volcanoes occur whereve there are tall mountains. c_earthquakes cause volcanoes in the same location to erupt violently d_volcanoes and earthquakes occur only where plates are colliding with each other

Aroller coaster car is traveling down a track at 22 m/s. the car has a mass of 2000 kg. what is the kinetic energy of the car? a) 22,000 j b) 968,000 j c) 484,000 j d) 44,000 j

What is the mass of sodium in 3 moles of sodium chloride