What is the mole fraction of ethanol in a mixture of 0.25 mol of ethanol and 0.4 mol of methanol? Report your answer to the hundreths place.

Write out the balanced equation for the reaction that occurs when Fe (OH) 3 and H2S react together. You do not need to make your subscripts smaller

Energy is expended when a force moves matter across a distance. True False The conservation of mass-energy and the first law of thermodynamics are synonymous. True False Temperature and thermal energy are synonymous terms.

When potassium chromate (K2CrO4) is added to a solution containing 0.500 g silver nitrate (AgNO3), solid silver chromate (Ag2CrO4) is formed. a)  Determine the theoretical yield.

The equilibrium concentrations of the reactants and products are [ HA ] = 0.260 M [HA]=0.260 M, [ H + ] = 2.00 * 10 - 4 M [H+]=2.00*10-4 M, and [ A - ] = 2.00 * 10 - 4 M [A-]=2.00*10-4 M. Calculate the value of p K a pKa for the acid HA HA.

The mass of an atom is found by adding its protons and (space) The electric charge of an atom is found by adding the charges carried by its protons and (space) (First space) 1. electrons 2. neutrons 3. nucleus (second space) 1. electrons 2.

Is the animal farm poor true or false

Which list correctly shows carbohydrates in size from smallest to largest?

Metallic behavior is generally associated with elements with partially filled p orbitals. elements with unpaired electrons. elements with small atomic radii. elements with very negative electron affinities. elements with low ionization energies.

Does cos have a dipole moment? choose the answer that best explains the reason for your choice.

How do the fracture toughness values compare between ceramics, polymers and metals?