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goldfiish [28.3K]
3 years ago
14

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.

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Given that the measure of angle 1 is 100 degrees, find the measurements of the other three angles.
Arlecino [84]

Answer:

Answer:

I DONT KNOW DO YOU WANT TO BE MY FRIEND

Explanation:

Step-by-step explanation:

Use easy-to-understand language

Use language that's easy-to-understand. If there's a piece of vocabulary that you feel needs clarifying, define it!

Make it complete

1/2 of an answer is zero answer.

4 0
3 years ago
Hello, can someone help me with this problem?
exis [7]

Answer:

Area of Rectangle A

Area = 4x^2

Area of Rectangle B

Area = 2x^2

Fraction

Fraction =\frac{2}{3}

Step-by-step explanation:

From the attached, we understand that:

The dimension of rectangle A is 2x by 2x

The dimension of rectangle B is x by 2x

Area of rectangle is calculated as thus;

Area = Length * Breadth

Area of Rectangle A

Area = 2x * 2x

Area = 4x^2

Area of Rectangle B

Area = x * 2x

Area = 2x^2

Area of Big Rectangle

The largest rectangle is formed by merging the two rectangles together;

The dimension are 3x by 2x

The Area is as follows

Area = 2x * 3x

Area = 6x^2

The fraction of rectangle A in relation to the largest rectangle is calculated by dividing area of rectangle A by area of the largest rectangle;

Fraction = \frac{Rectangle\ A}{Biggest}

Fraction =\frac{4x^2}{6x^2}

Simplify

Fraction =\frac{2x^2 * 2}{2x^2 * 3}

Fraction =\frac{2}{3}

7 0
3 years ago
Please guys solve Ex:4 ,i don't know it​
steposvetlana [31]

Step-by-step explanation:

all you have to doe is type Ex:4 into the calculator and you should get your answer.

6 0
2 years ago
Read 2 more answers
A line contains the points (3,9) and (-1,1) what is the equation of the line?
kirza4 [7]
To find the equation of a line using two given set of points, you must first find slope. To do so, we must use the slope formula:
y2 - y1 / x2 - x1 

In this case:
1 - 9 / -1 - 3 = -8 / -4 
- 8 / -4 = 2 (simplified) 

Now we can use the point-slope formula:
y - y1 = m(x - x1) 

y - 1 = 2(x + 1 )
y - 1 = 2x + 2
y = 2x + 3

In order to make 3x - y = 6 in slope intercept form, we must isolate y.

- y = -3x + 6
Note: y cannot be negative, so we'll multiply both sides by -1 
( -1 ) - y = - 3x + 6 ( -1 ) = y = 3x -6
6 0
3 years ago
Read 2 more answers
Grace bought a television for $329 and some DVDs for $5.75 each. Write and equations to find out how many DVDs grace bought if s
marishachu [46]

The total number of DVDs that she bough is 6

<h3>Linear equations</h3>

Linear equation are expression that has a leading degree of 1.

Let the price of each DVD be x such that if Grace bought a television for $329 and some DVDs for $5.75 each  and spent a total of $363.50, ten;

329 + 5.75x = 363.5

Subtract 329 from both sides

329 + 5.75x - 329 = 363.5 - 329

5.75x = 34.5

x = 34.5/5.75

x = 6

This shows that the total number of DVDs that she bough is 6

Learn more on linear equation here: brainly.com/question/2030026

#SPJ1

3 0
1 year ago
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