A buffer solution is made using a weak acid, ha. if the ph of the buffer is 4 and the ratio of a - to ha is 0.001, what is the pka of ha?

Cl2 (g) + 2NaBr (aq) 2NaCl (aq) + Br2 (l) The reaction given above is a single replacement reaction because: A. one of the reactants is a gas B. none of the reactants are solids C. chlorine replaces bromine D. the reaction proceeds spontaneously

What is the Molar mass of Fe2 (SO4) 3

A bird is able to easily soar when it flies over a thermal. A thermal is a current of warm air that is heated by the ground and rises up into the sky, taking the bird with it. What is this an example of? A. Conduction B. Radiation C. Contusion D.

If the coefficient to its place in front of the product Tetraiodine nonaoxide (i4o9), then how many atoms of each element must be accounted for on the other side of the equation?

How does the movement of particles in a stick of butter differ from the movement of particles in a dish of melted butter?

What is a successful outcome for using a scientific method? develop a theory develop a hypothesis support a hypothesis analyze data

A ping pong ball with a mass of 2.20 grams rolls along a frictionless table with a velocity of 0.850 m/s. what is the momentum of the ping pong ball?1.87 g m/s2.59 g m/s1.59 g m/s3.04 g m/s

Elements have been discovered with up to how many energy levels

How many minutes are in 33.6 days

Select the equations that are correctly balanced. a. H2O + 2O2 → H2O2 b. Fe2O3 + 3H2 → 2Fe + 3H2O c. Al + 3Br2 → AlBr3 d. CaCO3 → CaO + CO2