When the products of a reaction are hotter than the reactants: The reaction is exothermic. The reaction is endothermic. The reactants lost internal energy. The change in enthalpy is positive.

Description of the outer core of the earth

What is the element named after the man that put the first periodic table together?

In this unbalanced reaction, which atom is reduced? h2o + cl2 + so2 → hcl + h2so4

How many oxygen atoms are in 7.90 g of Al2 (SO4) 3?

What are the two main sources of energy in the water cycle? hydro energy and gravitational energy kinetic energy and thermal energy gravitational energy and thermal energy gravitational energy and mechanical energy

How many grams of NaOH are produced with the reaction of 5.00 moles of water?

Describe the physical properties of water

Which element has the same number of valence electrons as oxygen--. a. Neon-b. Nitrogen-c. Sulfur-d. Fluorine

Approximately how many half-lives must pass for the amount of radioactivity in a substance to decrease to below 1% of its initial level?

Which piece of glassware is best suited for making accurate dilutions?