1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vekshin1
3 years ago
11

A chemist must dilute of aqueous sodium carbonate solution until the concentration falls to . He'll do this by adding distilled

water to the solution until it reaches a certain final volume. Calculate this final volume, in milliliters. Be sure your answer has the correct number of significant digits.
Chemistry
1 answer:
Mademuasel [1]3 years ago
3 0

The question is incomplete, complete question is :

A chemist must dilute 73.9 mL of 400 mM aqueous sodium carbonate  solution until the concentration falls to 125 mM . He'll do this by adding distilled water to the solution until it reaches a certain final volume. Calculate this final volume, in liters. Be sure your answer has the correct number of significant digits.

Answer:

The final volume of the solution will be 0.236 L.

Explanation:

Concentration of sodium carbonate solution before dilution =M_1= 400 mM

Volume of sodium carbonate solution before dilution = V_1=73.9 mL

Concentration of sodium carbonate solution after dilution =M_2= 125 mM

Volume of sodium carbonate solution after dilution = V_2=?

Dilution equation is given by:

M_1V_1=M_2V_2

V_2=\frac{M_1V_1}{M_2}

V_2=\frac{400 mM\times 73.9 mL}{125 mM}= 236.48 mL\approx 236 mL

1 mL = 0.001 L

236 mL = 0.236 L

The final volume of the solution will be 0.236 L.

You might be interested in
What is (part of life)and(art of life)?someone will answer me​
irinina [24]

Explanation:

Part of life is the role we certainly play during our role in life.Like a quote of shakespeare,we have our roles in earth to perform or we are like a chess whom we don't want to waste a move.

Art of life signifies that our life is wonderful with mysteries and hypotenic beauty and wonders and with different moments in a journey.

<em>Keep</em><em> </em><em>smiling </em><em>and</em><em> </em><em>hope</em><em> </em><em>u</em><em> </em><em>r</em><em> </em><em>satisfied </em><em>with</em><em> </em><em>my</em><em> </em><em>answer</em><em>.</em><em>Have</em><em> </em><em>a</em><em> </em><em>great</em><em> </em><em>day</em><em> </em><em>:</em><em>)</em>

7 0
2 years ago
What did ancient astronomers think areas of the moon called mares might be?
RUDIKE [14]

Answer: seas

Explanation:

The ancient astronomers thought the mares on the moon were seas.

7 0
3 years ago
How do dominate and recessive alleles differ?
ch4aika [34]
 Hi , basically dominant alleles are always expressed in the organism , while recessive traits   tend to be expressed only when the dominant allele is not present.
3 0
2 years ago
2-phosphoglycerate(2PG) is converted to phosphoenolpyruvate (PEP) by the enzyme enolase. The standard free energy change(deltaGo
pogonyaev

Answer:

The correct option is: (D) -2.4 kJ/mol

Explanation:

<u>Chemical reaction involved</u>: 2PG ↔ PEP

Given: The standard Gibb's free energy change: ΔG° = +1.7 kJ/mol

Temperature: T = 37° C = 37 + 273.15 = 310.15 K    (∵ 0°C = 273.15K)

Gas constant: R = 8.314 J/(K·mol) = 8.314 × 10⁻³ kJ/(K·mol)     (∵ 1 kJ = 1000 J)

Reactant concentration: 2PG = 0.5 mM

Product concentration: PEP = 0.1 mM

Reaction quotient: Q_{r} =\frac{\left [ PEP \right ]}{\left [ 2PG \right ]} = \frac{0.1 mM}{0.5 mM} = 0.2

<u>To find out the Gibb's free energy change at 37° C (310.15 K), we use the equation:</u>

\Delta G = \Delta G^{\circ } + 2.303 R T log Q_{r}

\Delta G = 1.7 kJ/mol + [2.303 \times (8.314 \times 10^{-3} kJ/(K.mol))\times (310.15 K)] log (0.2)

\Delta G = 1.7 + [5.938] \times (-0.699) = 1.7 - 4.15 = (-2.45 kJ/mol)

<u>Therefore, the Gibb's free energy change at 37° C (310.15 K): </u><u>ΔG = (-2.45 kJ/mol)</u>

4 0
3 years ago
Which statement best describes the function of capillaries, arteries, and veins in the circulatory system? A. Capillaries delive
kondor19780726 [428]
The answer is a. The arteries are red and transfer blood to the heart. Veins are blue and transfer blood away from the heart and to all of the different parts of the body. The capillaries are in-between the veins and arteries and provide blood to cells.

3 0
3 years ago
Read 2 more answers
Other questions:
  • List 4 observations that suggest a chemical change is occurring
    14·2 answers
  • Activated charcoal is used in gas<br> masks. What physical property is<br> related to this use?
    12·1 answer
  • Explain briefly why oxygen exists as diatonic molecules?
    14·1 answer
  • What is the product of 3fe + 4h20 &gt; fe3o4+4h2
    13·1 answer
  • How can crossing over lead to the expression Of new traits
    13·1 answer
  • NaOH has a molarity of 2.5 M and a volume of 4 Liters, how many moles are in<br> the solution?
    14·1 answer
  • An atom of element X has one more shell of electrons than an atom of beryllium, but it has one less valence electron than beryll
    8·2 answers
  • Which element shares the most characteristics with carbon (C)?
    6·2 answers
  • 8- Which of the following statements about a catalyst is true?"
    5·1 answer
  • Nitrogen is an element. What is the smallest particle of nitrogen that has all the properties of nitrogen?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!