All categories

3 years ago

A group of students forgot to add thiosulfate to one test tube> what will they observe?

Mathematics

1 answer:

anzhelika [568]3 years ago

6 0

Answer:

The solution will experience an instant colour change because thiosulphate which is meant to be used as a clocking or Redox reagent which would have to react with iodine is absent.

Step-by-step explanation:

Thiosulphate is a chemical reagent that is used in chemical reactions such as titrations.

Thiosulphate is used as in the chemical reaction called Iodometry. This is a reaction whereby Thiosulphate is used as reactant and it is titrated against iodine in order to obtain an endpoint.

If Thiosulphate is not added to the test tube, there would be a colour change that occurs instantly because Thiosulphate did not react with iodine.

You might be interested in

Solving one step equations 1/4 a = 3

Pie

Answer:

a = 12

Step-by-step explanation:

$\frac{1}{4} a = 3$

Convert element into fraction : 3= 3/1

$\frac{1a}{4} = \frac{3}{1}$

Cross multiply

$1a \times 1 = 4 \times 3 \\ a = 12$

6 0

3 years ago

What’s the quotient of 2 1/4 and 5/8

lions [1.4K]

Answer:

The correct result would be 3 3/5.

Step-by-step explanation:

If you would like to find the quotient of 2 1/4 and 5/8, you can calculate this using the following steps:

2 1/4 = 9/4

2 1/4 / 5/8 = 9/4 / 5/8 = 9/4 * 8/5 = 18/5 = 3 3/5

6 0

3 years ago

Given m||n, find the value of x.<br> +<br> (7x-7)°<br> m<br> (6x+11)°

KengaRu [80]

Answer:

x = 18

Step-by-step explanation:

$(7x - 7) \degree = (6x + 11) \degree \\ (exterior \: alternate \: \angle s) \\ \\ 7x - 7 = 6x + 11 \\ \\ 7x - 6x = 11 + 7 \\ \\ x = 18$

5 0

3 years ago

find all the solutions of sec theta - 2 =0. It says use "or" as necessary and gives an example of kpi.

swat32

Sec t (theta) - 2 = 0
sec t = 2
1/ cos t = 2
cos t = 1/2
Answer:
t = π / 3 + 2 k π , or : t = 5 π / 3 + 2 kπ,
k ∈ Z

5 0

3 years ago

A customer states that she was shorted in change by receiving only 23 cents change from $3.00

Artemon [7]

Answer:

First, I would check and see if she was correct. If she wasnt, I would simply show her why she was incorrect. If I was to accidently short her, I would give her the money and move on with my day. if she refused to leave after showing her that I gave her the correct amount of money, she would probably call for the manager. I'd get the manager, explain what happened, and the annoying customer would most likely get kicked out of the store.

(P.S: sorry if it was a little confusing lol)

8 0

3 years ago