Which electromagnetic waves have the longest wavelengths

49. Which of the following statements regarding chemical equilibrium is true? Equilibrium is shown with a single arrow and/or an equal sign. A system at equilibrium maintains the concentrations of all reactants/products over time.

Sterling silver is: A) a heterogeneous mixture B) colloid C) an element D) Homogeneous mixture

Using the periodic table, how would you find elements with chemical properties similar to helium?

Why does it matter that the sea level is rising? A) A few inches can make a huge difference with coastal flooding. B) Populations along coastlines are generally very dense. C) Sea level rise can cause habitat loss and can also affect drinking water.

What is the Gibbs free energy?

7g of gold is heated from 17 degrees C to 42 degrees C. How much energy (heat) was used? The specific heat capacity of gold is. 031cal/gC.

Which of the following would a chemist be most likely to study? a leaf floating on water a leaf changing color in autumn a leaf being blown by the wind a leaf being eaten by insects

Which of the following is not a characteristic of solids? a. particles in a solid are completely motionless. b. solids are not compressible. c. solids have a definite shape. d. solids have a definite volume.?

Jose gets up from his seat on the bus to move closer to the front. Just as he begins to walk forward, the bus stops at a light.

A rate is equal to 0.0200 M/s. If [A] = 0.100 M and rate = k[A][B]2, what is the new rate if the concentration of [A] is increased to 0.200 M?