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Romashka [77]
3 years ago
7

1.Calculate the molarity of a 6.15% (w/v%) sodium hypochlorite (NaOCl) solution (i.e. in a 100 ml of solution there is 6.15 gram

s of NaOCl.A. For each order (0th, first, second), give the integrated form of the rate law and explain what you would graph in order to test for that order.B. Calculate the molarity of a solution of Allura red AC, (FD&C dye Red #40) (MW 496.4 g/mol) if a 0.3500 g sample is diluted to 100 mL in a volumetric flask.C. You will be taking 3 ml of this solution and diluting to 100 mL in a volumetric flask. This will be solution 2. What is the molarity of solution 2?D. If you were to make a third solution by taking 3 ml of solution 2 and diluting it to 100 mL, what is the molarity of solution 3?Given:Solution 1. (Already prepared for you) (0.3500 g of food coloring in a 100-mL volumetric flask).Solution 2. Transfer 3 mL of Solution 1 to the 100-mL volumetric flask. Add DI water to fill to the mark. Label this solution as “Solution 2”Sodium Hypochlorite. Obtain about 5 mL of concentrated bleach (record the concentration of the bleach in your notebook) in a clean 50 mL beaker then add 45 mL of DI water. Label as “bleach”.
Chemistry
1 answer:
shtirl [24]3 years ago
3 0

Answer:

C  U  M

Explanation:

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Hoochie [10]

Answer:

0.08 moles

Explanation:

Relative atomic mass of KMnO4 = K + Mn + O4 = 39 + 55 + 16 x 4 = 158

=> Moles in 13g of KMnO4 = \frac{Mass}{Relative-atomic-mass} = \frac{13}{158} = 0.082278.. = 0.08 moles

3 0
3 years ago
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What volume of a 0.550 M solution of potassium hydroxide (KOH) can be made with 19.9 g of potassium hydroxide?
Natalija [7]

Answer:

0.645 L

Explanation:

To find the volume, you need to (1) convert grams to moles (using the molar mass) and then (2) calculate the volume (using the molarity ratio). The final answer should have 3 sig figs to match the sig figs of the given values.

(Step 1)

Molar Mass (KOH): 39.098 g/mol + 15.998 g/mol + 1.008 g/mol

Molar Mass (KOH): 56.104 g/mol

19.9 grams KOH              1 mole
--------------------------  x  -----------------------  =  0.355 moles KOH
                                     56.014 grams

(Step 2)

Molarity = moles / volume                            <----- Molarity ratio

0.550 M = 0.355 moles / volume                 <----- Insert values

(0.550 M) x volume = 0.355 moles              <----- Multiply both sides by volume

volume = 0.645 L                                          <----- Divide both sides by 0.550

6 0
1 year ago
A mole of any atom or molecule has the same number of?
GarryVolchara [31]
The answer to this question is particles yes girl work slay that chem
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3 years ago
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Identify the arrows that represent the process of cooling.<br> gas<br> liquid
olga nikolaevna [1]

Answer:

Liquid - Gas is Evaporation & Gas - Cooling is condensation

Explanation:

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2 years ago
Two solid blocks are HEATED to the temperatures show. The blocks are placed so they touch. Which diagram shows the DIRECTION HEA
Setler [38]

Answer:

Heat flows from the block at high temperature to the one with lower temperature

Explanation:

The direction of heat flow is from a body at higher temperature to one with a lower temperature.

  • Temperature gradient determines the way and manner in which heat is dissipated.
  • As a system tend to increase entropy, it ensures that heat moves from hotter body to a colder body.
  • Heat movement here is by conduction as the body touches.
  • When both bodies reaches the same temperature, thermal equilibrium is established.
7 0
3 years ago
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