A solution is prepared by dissolving 150 mL of ethanol in enough water to make a 500 mL solution. What is the percent by volume of ethanol in the solution?

10%

30%

70%

6800 6809 Answer these problems with correct sig dig. SHOW YOUR WORK! 32. A piece of copper is placed in a beaker containing 68.56 ml water. The total volume a beaker containing 68.56 ml water. The total volume of the water increases to 232 ml.

The reaction Ba (NO3) 2 (aq) + Na2SO4 (aq) >> 2NaNO3 (aq) + BaSO4 (s) goes to completion because a 1. gas is formed 2. precipitate is formed 3. unionized product is formed 4. soluble salt is formed

Consider the elements bromine and chlorine; which element has a larger ionic radius

Each of the following solutions is separated from a solution containing pure water with a semipermeable membrane. Assuming they all have the same temperature, rank the solutions from the highest to the lowest osmotic pressure.

Given f (x) = x - 7 and g (x) = x2 Find gif{4))

Periodic table, chemistry questions who discovered lanthanides. how did they discover it, when did they discover it.

A flask containing 155cm^3 of hydrogen was collected under a pressure of 22.5kPa. What pressure would have been required in order for the volume of the gas to have been 90.0 cm^3 at constant temperature?

Which change is most likely to occur when a molecule of H2 and a molecule of I2 collide with proper orientation and sufficient energy? 1. a chemical change, because a compound is formed 2. a chemical change, because an element is formed 3.

Which substance is a diatomic molecule? a. he b. o2 c. co2 d. h2o?

What is the difference between the electronegativity values of sodium and bromine?