What is a solution?

a mixture of two or more substances that are

mixed evenly throughout

a mixture of two or more substances that are

chemically combined

Which of these elements exists as a solid at room temp and pressure? Chlorine, bromine and iodine. Why?

Which of the following reactions have a positive ΔSrxn? Check all that apply. 2A (g) + B (s) - -> 3C (g) 2A (g) + B (g) - -> C (g) A (g) + B (g) - ->C (g) 2A (g) + 2B (g) - ->5C (g)

Is brittleness a chemical or physical property?

What is a radical? A) a group of ions that break up during a reaction B) a group of atoms that give off radiation C) a group of atoms that act like one atom D) a group of ions that have no charge

How many moles of carbon are in 6.0 moles of quinine

Regalo puntos : v vengan a mi prros

Write a net ionic equation for the overall reaction that occurs when aqueous solutions of phosphoric acid (h3po4) and potassium hydroxide are combined. assume excess base. use the pull-down boxes to specify states such as (aq) or (s).

What are the coefficients that will balance the skeleton equation below? n + h ⟶ nh?

Restate Newtons first law in terms of acceleration

Why is burning is not a recommended method of disposing plastics