A solution of pH6 has a
______ [H3O+] than does a
solution of pH4.
400
.71 moles of NaOH
What is, You are given 4.3 x 10^23
particles of NaOH, how many
moles does this equal?
400
39.2g MgCl2
If 20.0 g of magnesium react
with excess hydrochloric acid,
how many grams of magnesium
chloride will be produced?
400
The force that acts on the
surface of a liquid and that
tends to minimize the area of the
surface
What is surface tension?
400
C. They appear to be more
than one substance.
Which of the following is NOT
true of solutions?
A. The contain
a dissolved substance called a
solute.
B. They are composed
of two or more evenly
distributed substances. c. They
appear to be more than one
substance
C. They appear to be more
than one substance.
Chemists invented the mole in order to make it easier to calculate the amount of a chemical that is needed for a reaction, or that will be produced in a reaction.
Why did scientist create the concept of the mole?
500
13.35g CO2
When butane, C4H10 burns in
oxygen, the products are
carbon dioxide and water.
What
mass of carbon dioxide will be
produced when 4.42 g of
butane is burned in excess
oxygen?
500
The process in which a solid
changes directly into a gas (the
term is sometimes also used for
the reverse process)
What is sublimation?
500
Solute
In a solution, the ________ is
the substance that is dissolved.