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
Vedmedyk [2.9K]
3 years ago
12

Data has been collected to show that at a given wavelength in a 1 cm pathlength cell, Beer's Law for the absorbance of Co2 is li

near. If a 0.135 M solution of Co2 has an absorbance of 0.350, what is the concentration of a solution with an absorbance of 0.420?
Chemistry
1 answer:
White raven [17]3 years ago
4 0

Answer : The concentration of a solution with an absorbance of 0.420 is, 0.162 M

Explanation :

Using Beer-Lambert's law :

A=\epsilon \times C\times l

As per question, at constant path-length there is a direct relation between absorbance and concentration.

\frac{A_1}{A_2}=\frac{C_1}{C_2}

where,

A = absorbance of solution

C = concentration of solution

l = path length

A_1 = initial absorbance = 0.350

A_2 = final absorbance = 0.420

C_1 = initial concentration = 0.135 M

C_2 = final concentration = ?

Now put all the given value in the above relation, we get:

\frac{0.350}{0.420}=\frac{0.135}{C_2}

C_2=0.162M

Thus, the concentration of a solution with an absorbance of 0.420 is, 0.162 M

You might be interested in
The weight of a Moon Rover on Earth is 6,000 newtons,
olchik [2.2K]

Answer: C. 1000 Newton

Explanation:

Given that :

Weight of moon rover on earth = 6000 newton

Approximate of moon rover on moon will be?

Weight of an object (W) = mass(m) × acceleration due to gravity(g)

To get the mass of moon rover(m) :

m = weight / acceleration due to gravity

g on earth = 9.8m/s²

Hence,

mass of moon rover = 6000/ 9.8

= 612.244kg

Surface gravity on the moon is about 1.6m/s²

Hence ;

Weight of moon rover on the moon :

Mass of moon rover × 1.6m/s²

= 612.244 × 1.6m/s²

= 979.59 Newton

= 1000 Newton (nearest thousand)

5 0
4 years ago
Molecules in a sample of NH3 are held closely together by intermolecular forces
morpeh [17]
The forces in NH3 includes the vanderwaals force which will always be present and hydrogen bonding due to the electronegativity of N as compared to H. When it is in solution, there will be ionic interactions because there will be some NH4+ ions formed.
4 0
4 years ago
Question 1
maxonik [38]

Answer:

it is 2 degrees Celcius

Explanation:

5try54554555y5

3 0
3 years ago
Three substances A, B, and C melt at 00C,500C and -1500C
Drupady [299]
Answer:

That information is better presented and analyzed in a table.

This table shows you all the information and the answers:


Substance         melting point   boiling point    room temperature    conclusion
                                    °C                  °C                      °C                    (state)


A                                  0                    100                    25                    liquid

B                                  50                  200                    25                    solid
C                               -150                   10                     25                    gas

Explanation:

1) Substance A at 25° is above the melting point and below the boiling point, then it is liquid (just like water)


2) Substance B at 25°C is below the melting point, so it is solid.

3) Substance C at 25°C is above the boiling point, so it is gas.
7 0
3 years ago
Can someone help me balance this chemical equation?<br><br> CO2(g) + H2O(l) -&gt; C6H12O6(aq) + O2
hram777 [196]
It becomes:
6CO2 + 6H2O -> C6H12O6 + 6O2
8 0
3 years ago
Other questions:
  • Try try try please for me please
    14·1 answer
  • All rocks form deep beneath Earth's surface. True or False
    9·2 answers
  • Drawing inferences from givens common core geometry homework answer key
    12·1 answer
  • What is the main component of atoms that determines the type of bond that forms between atoms or compounds? Explain.
    12·1 answer
  • Using eq. 7: calculate the buffer capacity (BC) of your buffer solution before and after dilution with water, and enter the valu
    7·1 answer
  • A patient is advised to supplement her diet with 2g of calcium per day.the calcium tablets she purchase contain 500mg of calcium
    9·2 answers
  • What is the pH value of MgSO4?
    6·1 answer
  • Which pair of compounds will form a solution?
    8·1 answer
  • Explain how the complexity and diversity of living things has changed over time
    5·1 answer
  • Which missing item would complete this alpha decay reaction?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!