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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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How many moles of each reactant are needed to produce 3.60 x 10^2g ch3oh
zysi [14]
Methanol is prepared by reacting Carbon monoxide and Hydrogen gas,

                                   CO  +  2 H₂    →    CH₃OH

Calculating Moles of CO:
                                       According to equation,

             32 g (1 mole) of CH₃OH is produced by  =  1 Mole of CO
So,
             3.60 × 10² g of CH₃OH is produced by  =  X Moles of CO

Solving for X,
                       X  =  (3.60 × 10² g × 1 Mole) ÷ 32 g

                       X  =  11.25 Moles of CO

Calculating Moles of H₂:
                                       According to equation,

             32 g (1 mole) of CH₃OH is produced by  =  2 Mole of H₂
So,
             3.60 × 10² g of CH₃OH is produced by  =  X Moles of H₂

Solving for X,
                       X  =  (3.60 × 10² g × 2 Mole) ÷ 32 g

                       X  =  22.5 Moles of H₂

Result:
            3.60 × 10² g of CH₃OH
is produced by reacting 11.25 Moles of CO and 22.5 Moles of H₂.
3 0
4 years ago
The EPA scientist measures the pH level in one area of a river to be lower than normal and writes that a pollutant must have bee
shutvik [7]
Its an example of inference. 
4 0
4 years ago
Read 2 more answers
Calculate the mass in grams for 2.28 moles of N2.
borishaifa [10]

Answer: 63.9

Explanation:

7 0
2 years ago
In a 0.730 M solution, a weak acid is 12.5% dissociated. Calculate Ka of the acid.
Mamont248 [21]

Answer:

Approximately 1.30 \times 10^{-2}, assuming that this acid is monoprotic.

Explanation:

Assume that this acid is monoprotic. Let \rm HA denote this acid.

\rm HA \rightleftharpoons H^{+} + A^{-}.

Initial concentration of \rm HA without any dissociation:

[{\rm HA}] = 0.730\; \rm mol \cdot L^{-1}.

After 12.5\% of that was dissociated, the concentration of both \rm H^{+} and \rm A^{-} (conjugate base of this acid) would become:

12.5\% \times 0.730\; \rm mol \cdot L^{-1} = 0.09125\; \rm mol \cdot L^{-1}.

Concentration of \rm HA in the solution after dissociation:

(1 - 12.5\%) \times 0.730\; \rm mol \cdot L^{-1} = 0.63875\; \rm mol\cdot L^{-1}.

Let [{\rm HA}], [{\rm H}^{+}], and [{\rm A}^{-}] denote the concentration (in \rm mol \cdot L^{-1} or \rm M) of the corresponding species at equilibrium. Calculate the acid dissociation constant K_{\rm a} for \rm HA, under the assumption that this acid is monoprotic:

\begin{aligned}K_{\rm a} &= \frac{[{\rm H}^{+}] \cdot [{\rm A}^{-}]}{[{\rm HA}]} \\ &= \frac{(0.09125\; \rm mol \cdot L^{-1}) \times (0.09125\; \rm mol \cdot L^{-1})}{0.63875\; \rm mol \cdot L^{-1}}\\[0.5em]&\approx 1.30 \times 10^{-2} \end{aligned}.

5 0
3 years ago
A gas is collected at a temperature of 25.2 degrees celcius and a pressure of 0.967 atm. What pressure would the gas have at a t
Nimfa-mama [501]

Answer:

1.707599191 atm

Explanation:

44.5 divided by 25.2 = 1.765873 (i used calculator to double check)

1.765873 x 0.967 = 1.707599191 (used calculator)

5 0
3 years ago
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