What are the 4 indicators that a chemical reaction has taken place? what are they

Which of the following is a net ionic equation that best represents a weak acid-strong base reaction?

What is the [ch3co2-]/[ch3co2h] ratio necessary to make a buffer solution with a ph of 4.44?

The lattice energy of KBr is 671.0 kJ/mol and its heat of solution is 19.9 kJ/mol. Calculate the hydration of energy of KBr (s).

What is the volume of HCl gas required to react with excess magnesium metal to produce 6.82 L of hydrogen gas at 2.19 atm and 35.0 °C? 2 HCl (g) + Mg (s) ? MgCl2 (s) + H2 (g)

A standard drink of beer is _ ounces.

The energy needed to start a chemical reaction is called

How does the motion of particles in the sun's plasma compare to the motion of particles in a solid? particles in both the plasma and a solid move around to fill available space.

What is the molarity of a solution containing 45.78gMgCl2 dissolved in 3.00L of solution?

What kind of wavelength do television signals have? a. Short c. Long b. Intermediate d. Very rapid

What gene is responsible for tumor suppression? A. beta - galactoside B. p53 C. alpha goblin D. beta goblin