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stepan [7]
3 years ago
10

Jenny places a strip of pH paper into a solution. When she removes the pH paper, it has turned yellow-green. What should Jenny d

o next to determine the pH of her solution? A. place the pH paper into a machine that reads the pH of the solution b. compare the pH paper's color with the color of pH paper from another solution C. use a different testing method because the pH paper should not change colors D. compare the pH paper's color with a chart of colors and pH ranges
Chemistry
1 answer:
Galina-37 [17]3 years ago
3 0
The answer is D. compare the pH paper's color with a chart of colors and pH ranges. This is the method of using pH paper. pH paper is just a method to determine the pH number roughly.
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A Bunsen burner's job is to do what?
Vsevolod [243]

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3 years ago
An aqueous NaClNaCl solution is made using 111 gg of NaClNaCl diluted to a total solution volume of 1.20 LL .Calculate the molal
Aliun [14]

Answer:

The answer to your question is m = 1.6

Explanation:

Data

mass of NaCl = 111 g

volume of water = 1.2 L

Molality = ?

Formula

Molality = number of moles / volume (L)

Process

1.- Calculate the moles of NaCl

Molecular mass = 23 + 35.5 = 58.5 g

                          1 mol of ------------------- 58.5 g

                          x           -------------------- 111 g

                          x = (111 x 1) / 58.5

                          x = 1.897 moles of NaCl

2.- Calculate the mass of water

density of water = 997 kg/m³

mass = volume x density

mass = 0.0012 x 997

mass = 1.19 kg

3.- Calculate molality

m = 1.897/1.19

m = 1.6

   

7 0
3 years ago
Jack claims that two 1.0 M solutions will always have a higher reaction rate
KIM [24]

Answer:

Hi i got , B. He is right, because there will be more successful collisions between reactants in the 1.0 M solutions.

Explanation: Hope it helps !!

6 0
3 years ago
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