Which of the following may indicate that a chemical reaction has occurred?

You are measuring the concentration of Fe 2 in a sample is determined by measuring the absorbance of its complex with ferroxine. The sample, measured in a 1.00 cm cuvette, has an absorbance of 0.333.

What effect does an increase in products have on the reaction rate of a mixture at equilibrium?

How to make science project on magnet

The Metal Wire In An Incandescent Lightbulb Glows When The Light Is Switched On And Stops Flowing When It Is Switched Off. This Simple Process Is Which Kind Of Change?

An atom has two electrons in its inner energy shell, eight in the second, and one in the outermost shell. what is the most likely outcome for this atom in terms of chemical bonding

Identify the spectator ions in the following complete ionic equation. 2k (aq) s2 - (aq) pb2 (aq) 2no-3 (aq) →pbs (s) 2k (aq) 2no-3 (aq) express your answers as ions separated by a comma.

4. A bird left its post and flew in a triangular path. It flew 21 yards south, 72 yards east and 75 yards diagonally to end back at the post. Is it a right triangle?

Condension occurs in the inside of your windows in Winters, why?

How can you use Hess's law to determine a reaction's enthalpy?

7. How much energy in KJ is released when 15.0 g of steam at 100.0 degrees Celsius is condensed and then frozen to ice at 0.0 degrees Celsius?