Question

1. Calculate the p-value for each ion in a solution that is
0.0635 M in NaCl and 0.0403 M in NaOH.
2. A solution was prepared by dissolving 1210 mg of
K3Fe(CN)6 (329.2 g/mol) in sufficient water to give 775 mL.
Calculate: (a) analytical molarity of K3Fe(CN)6.
(b) the molar concentration of K+
.
3. Describe the preparation of 750 mL of 6.00 M H3PO4
from the commercial reagent that is 86% H3PO4 (w/w) and
has a specific gravity of 1.71.
4. Describe the preparation of
(a) 500 mL of 0.0750 M AgNO3 from the solid reagent.
(b) 400 mL of a solution that is 0.0810 M in K+
, starting with
solid K4Fe(CN)6.
(c) 600 mL of 3.00% (w/v) aqueous BaCl2 from a 0.400 M
BaCl2 solution.
5. A 12.5 mL portion of a solution is diluted to 500 mL, and
its molarity is determined to be 0.125. What is the molarity
of the original solution?
6.A 0.4456 g sample of ore is analyzed for chromium and
found to contain 0.560 mg Cr2O3. Rxpress the Cr2O3 in the
sample as (a) percent, and (b) parts per million.


ASAP !! NEED HELP PLEASE !!

Answer 1

Answer:

1. Calculate the p-value for each ion in a solution that is

0.0635 M in NaCl and 0.0403 M in NaOH.

2. A solution was prepared by dissolving 1210 mg of

K3Fe(CN)6 (329.2 g/mol) in sufficient water to give 775 mL.

Calculate: (a) analytical molarity of K3Fe(CN)6.

(b) the molar concentration of K+

.

3. Describe the preparation of 750 mL of 6.00 M H3PO4

from the commercial reagent that is 86% H3PO4 (w/w) and

has a specific gravity of 1.71.

4. Describe the preparation of

(a) 500 mL of 0.0750 M AgNO3 from the solid reagent.

(b) 400 mL of a solution that is 0.0810 M in K+

, starting with

solid K4Fe(CN)6.

(c) 600 mL of 3.00% (w/v) aqueous BaCl2 from a 0.400 M

BaCl2 solution.

5. A 12.5 mL portion of a solution is diluted to 500 mL, and

its molarity is determined to be 0.125. What is the molarity

of the original solution?

6.A 0.4456 g sample of ore is analyzed for chromium and

found to contain 0.560 mg Cr2O3. Rxpress the Cr2O3 in the

sample as (a) percent, and (b) parts per million.

ASAP !! NEED HELP PLEASE !!

It na bara question likha hat dard nhi kar raha hai

Answer 2

Answer:

sakn eng Answer the following questions: 1. Why did the puppet maker want his son to stay at home ? sdo 2. How many puppets did Aung's father give him? Name then 3. What do the four puppets signify in the story? 4. What advice did each of the puppets give to Aung ? 5. What advice did Aung say that he would never forget again 6. How did Aung use his wealth ? ling ever uca