Question

What's the concentration of 5mL 40 ppm Fe++ solution. show steps please!

Edit: What about after its had 45mL of other substances added?

Answer #1

What is the concentration in ppm Mg for a solution that is 5.0 x
10-4 M in MgCl2? please show calculations

Please show all steps.
If you titrate 25.00 mL of a 0.09797 M solution of HBrO, having
Ka = 2.8 x 10-9, with 0.05000 M Ba(OH)2
solution:
a) Calculate the number of mL of Ba(OH)2 solution
needed to reach the equivalence point.
b) Calculate the pH inititally, before any Ba(OH)2
solution is added.
c) Calculate the pH at halfway.
d) Calculate the pH at the equivalence point.

please show all work!!!
1. A solution of .20M Na2CO3 is slowly added to a
mixture containing .35M Co^+2 and .45M Pb^+2
Ksp CoCO3 = 1.4 x 10^-3
Ksp PbCO3 = 7.4 x 10^-14
a. Will CoCO3 or PbCO3 percipitate first?
b. What percent of the initial concentration of the first ion
to percipitate remaims in the solution when the other ion begins to
percipitate?

What is the concentration of Ag+ ion in solution
after 100.0mL of 0.150 M AgNO3 is added to 20.0 ml of
1.00 M NaBr? Then find the concentration of Br-, Na+, and No3- ion
as well
***** I figured out that the mass of solid AgBr produces 2.82
grams, but don't know how to apply that to figure out the answer
for the question above

Please show all steps and reasoning to question.
A piece of copper with heat capacity 50 cal/C° is removed from
an oven at 95°C and placed into a container with a 40-g sample of
water at 20°C. The two substances are allowed to come into thermal
equilibrium. (Note: Ignore thermal interactions with the air and
the container itself.)
A. Consider the heat transfer needed to change the temperature
of the water sample by 1C°. • How many calories are transferred?...

Please show steps to solution using a FINANCIAL
CALCULATOR
a. Calculate the present value of an annuity due which pays 500
every year for the next five years, if the interest rate is 5%.
b. You recently got promoted at your job. You have since decided
to buy your dream car which costs $97,000. The car dealer tells you
to pay 11,000 at the end of every year for the next 7 years after
which you can take possession of...

Please solve the following using the MATHCAD application and
show the solution.
A 3C-SiC material was doped with 8x1016 acceptor atoms/cm3:
(a) Find (i) the majority and minority carrier concentrations
and (ii) the ionization energy for the acceptor.
(b) If 8x1016 donor atoms/cm3 was added to the original doping,
(i) what is the electron and hole concentration and (ii) what is
the location of EF?

What is the concentration of the Vitamin C standard solution
that you are making?
Using the analytical balance in the instrument room, carefully
weigh out about 125 mg of Vitamin C and place it in a 100-mL beaker
in approximately 50 mL of water. It is not necessary for you to
have exactly 125 mg, but it is important for you to know exactly
how many mg you do have, and to make sure none of it is lost in...

Please show all steps! NO EXCEL! Thank you!!
1. Your portfolio is comprised of 40 percent of stock X, 20
percent of stock Y, and the rest in stock Z. Stock X has an
expected return of 10%, stock Y has an expected return of 15%, and
stock Z has an expected return of 2%. What is the expected return
of your portfolio?
2. Your portfolio is comprised of 20% of stock X, 40% of stock
Y, and the rest...

please consider that all of the parts are related to each other
and are about solubility of INSOLUBLE SALTS. I need brief and right
answers please consider that while answering my questions.
a) Will any changes be observed in a saturated solution of BaSO4
if some barium chloride solution is added? Write a balanced
equation to support your answer. Explain.
b) The measured volume of saturated Ca(IO3)2 solution (filtrate
W) was believed to be 1.0 ml and this volume was...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 18 minutes ago

asked 20 minutes ago

asked 20 minutes ago

asked 32 minutes ago

asked 32 minutes ago

asked 39 minutes ago

asked 40 minutes ago

asked 42 minutes ago

asked 42 minutes ago

asked 43 minutes ago

asked 44 minutes ago

asked 46 minutes ago