Find the hydroxide ion concentration of a solution with a pOH of 5.90. To solve this, use a scientific calculator and enter 5.90 and use the +/- button to make it negative and then press the 10x key.
Answer:
Approximately 
.
Explanation:
Balanced equation for this reaction:
.
Look up the relative atomic mass of elements in the limiting reactant, 
, as well as those in the product of interest, 
:
Calculate the formula mass for both the limiting reactant and the product of interest:
.
.
Calculate the quantity of the limiting reactant () available to this reaction:
.
Refer to the balanced equation for this reaction. The coefficients of the limiting reactant () and the product (
) are both 
. Thus:
.
In other words, for every 
of formula units that are consumed, 
of formula units would (in theory) be produced. Thus, calculate the theoretical yield of 
in this experiment:
.
Calculate the theoretical yield of this experiment in terms of the mass of expected to be produced:
.
Given that the actual yield in this question (in terms of the mass of ) is 
, calculate the percentage yield of this experiment:
.
To completely describe an electron in an atom, four quantum numbers are needed: energy (n), angular momentum (ℓ), magnetic moment (mℓ), and spin (ms). The first quantum number describes the electron shell, or energy level, of an atom.
Student Safety Contract - Flinn Scientific
ties which require the use of hazardous chemicals. Safety in ... vided to you in this student safety contract. ... 3. Never work alone. No student may work in the laboratory without an instructor ... Look for things such as.
Missing: five | Must include: five
Answer:
Gravitational force between two objects depends on: a. The weight of the objects c. The mass of each object b. The distance between the objects d. Both b and c Please select the best answer from the choices provided A B C D
✓d
:
.
:
.
:
.
:
.