What type of reaction absorbs heat from the surrounding environment?

A. Endothermic

B. Exothermic

C. Heterothermic

D. Homothermic

The middle or center of the atom is called the

Which phrase describes an activated complex? A. high-energy and unstable B. high-energy and stable C. low-energy and stable D. low-energy and unstable

Consider the reaction: 2NO (g) + 2H2 (g) → N2 (g) + 2H2O (g) A suggested mechanism for this reaction follows: (1) NO (g) + NO (g) → N2O4 (g) (slow) (2) N2O4 (g) + H2 (g) → N2 (g) + H2O2 (g) (fast) (3) H2O2 (g) + H2 (g) → 2H2O (g) (fast) Based on

254950m to millimeter

What total percent of energy came from fuels that emmited greenhouse gases

The balanced equation below represents the reaction between magnesium metal and hydrochloric acid to produce aqueous magnesium chloride and hydrogen gas. Mg (s) + 2HCl (aq) = = > MgCl2 (aq) + H2 (g) A piece of Mg (s) has a volume of 0.

What is the molarity of a solution prepared by dissolving 33.4 g of sodium chloride in some water and then diluting the solution to a volume of 300.00 mL?

Think about how pressure relates to volume and how gas behavior would change in different volumes. Which of the following will have the largest positive value for Sº? A) 1 mole of helium gas at 1 atm pressure.

Does a reaction stop once it has reached equilibrium? Explain

8 l of water at 19 ∘c are mixed with 1.1 l of water at 47 ∘c in an insulated container. what is the final temperature of the system? express your answer in ∘c