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BaLLatris [955]
3 years ago
13

calculatorn the past, many students have listed that the accidental addition of too much acetic acid contributed greatly to the

di:erence between the experimental value and the accepted value. Suppose that Student A was supposed to make a 0.18 Msolution by diluting 9.0 mL of 2.0 M acetic acid to 100.0 mL. The expected pH for this solution is 2.74. The Ka of acetic acid is 1.8 x 10-5. a. What would be the expected pH if a Student A accidentally diluted 9.1 mL (instead of 9.0 mL) of the acid to 100 mL.
Chemistry
1 answer:
Tresset [83]3 years ago
6 0
Is that supposed to be a paragraph
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the hcp ordered 0.2 mg of methylergonovine, and the vial contains 0.8 mg/ml. how many ml of methylergonovine should the nurse dr
olasank [31]

The volume (in mL) of methylergonovine the nurse should draw up in the syringeis is 0.25 mL

<h3>What is density? </h3>

The density of a substance is simply defined as the mass of the subtance per unit volume of the substance. Mathematically, it can be expressed as

Density = mass / volume

With the concept of density, we can obtain the volume of methylergonovine. Details below

<h3>How to determine the volume </h3>

The following data were obtained from the question:

  • Mass of methylergonovine = 0.2 mg
  • Density of methylergonovine = 0.8 mg/mL
  • Volume of methylergonovine =?

Density = mass / volume

Cross multiply

Density × volume = mass

Divide both sides by density

Volume = mass / density

Volume = 0.2 / 0.8

Volume of methylergonovine = 0.25 mL

Learn more about density:

brainly.com/question/952755

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8 0
1 year ago
using the chemical stoichiometry, determine the number of moles of carbonic acid that can be produced from 4 mol of NaHCO3 and 8
Pavlova-9 [17]
Reaction is NaHCO3 + HCL = H2CO3 + NaCl
the ratios are 1:1 

the 8 moles of HCl are in excess

so if you use 4 moles of NaHCO3 then you will obtain 4 moles of carbonic acid

hope that helps
6 0
2 years ago
Read 2 more answers
The initial concentration of a solution of NaOH is 5.0 M. What volume of the concentrated stock solution is needed to make 200 m
sveticcg [70]

Answer:

0.8 mL

Explanation:

Use the formula M1V1 = M2V2.

Plug the values in.

5(V1) = 0.02(200)

5V1 = 4

V1 = 0.8 mL

Hope this is right, correct me if I'm wrong!

4 0
2 years ago
In the reaction, 2H2 + O2 --&gt; 2H2O, how many hydrogen molecules are needed to produce two water molecules?
Natali [406]
2 is the correct answer because with 2O2 molecules it balances the chemical equation.

Hope that helps
5 0
3 years ago
Is hydrogen peroxide a element, compound or a mixture?
victus00 [196]

Answer:

hydrogen peroxide is a compound

4 0
2 years ago
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