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
Svetradugi [14.3K]
3 years ago
7

The brackets used to express concentration [ ], when making equilibrium constant calculations, indicate

Chemistry
1 answer:
olchik [2.2K]3 years ago
4 0
Constant is K and that is the the concentration of product over the concentration of reactant for example for the equlibrium equation below
A+2B=3C
K= [C]^3/( [A]* [B]^2
You might be interested in
Number of stable isotopes in Hydrogen?
kari74 [83]
3.
protium (A = 1), deuterium (A = 2), and tritium (A = 3).
5 0
2 years ago
Read 2 more answers
How many grams of F− must be added to a cylindrical water reservoir having a diameter of 2.02 × 102 m and a depth of 87.32 m?
aksik [14]

Complete Question:

To aid in the prevention of tooth decay, it is recommended that drinking water contain 0.800 ppm fluoride. How many grams of F− must be added to a cylindrical water reservoir having a diameter of 2.02 × 102 m and a depth of 87.32 m?

Answer:

2.23x10⁶ g

Explanation:

The concentration of the fluoride (F⁻) must be 0.800 ppm, which is 0.800 parts per million, so the water must have 0.800 g of F⁻/ 1000000 g of the solution. The density of the water at room temperature is 997 kg/m³ = 997x10³ g/m³. So, the concentration of the fluoride will be:

0.800 g of F⁻/ 1000000 g of the solution * 997x10³ g/m³

0.7976 g/m³

The volume of the reservoir is the volume of the cylinder: area of the base * depth. The base is a circumference, which has an area:

A = πR², where R is the radius = 1.01x10² m (half of the diameter)

A = π*(1.01x10²)²

A = 32047 m²

The volume is then:

V = 32047 * 87.32

V = 2.7983x10⁶ m³

The mass of the F⁻ is the concentration multiplied by the volume:

m = 0.7976 * 2.7983x10⁶

m = 2.23x10⁶ g

8 0
3 years ago
Help me pls its chemistry
saul85 [17]

B to C:-

  • The temperature remains constant from B to C in any time interval .
  • Looking at the graph there is BC || x axis.
  • Hence temperature remains unchanged.

E to D:-

  • Here also the temperature remains constant.
  • As we can see ED|| x axis
8 0
2 years ago
Find the length of time required for the total pressure in a system containing N2O5 at an initial pressure of 0.110 atm to rise
USPshnik [31]

Answer:

t = 37.1 s

Explanation:

The equation for the reaction is given as;

                  2 N2O5(g)  --> 4 NO2 + O2

Initial:          0.110                  -             -

change:        -2x                  +4x        +x

Final:          0.110 - 2x           +4x        +x

But final = 0.150atm;

0.110 - 2x    +  4x   +  x = 0.150 atm

3x = 0.150 - 0.110

x = 0.0133 atm

Pressure in reactant side;

0.110 - 2x

0.110 - 2 (0.0133) = 0.0834 atm

The integral rate law expression is given as;

ln ( [A] / [Ao] ) = -kt

k =  rate constant = 7.48*10^-3*s-1

ln (0.0834/0.11) = (7.48*10^-3)  t

upon solving, t = 37.1 s

3 0
2 years ago
How would you define what the conductivity of a substance is?
iragen [17]

Answer:

Conductivity of a substance is defined as 'the ability or power to conduct or transmit heat, electricity, or sound'.

Explanation:

hope it helps

plzz mark as brainliest....

7 0
3 years ago
Other questions:
  • When parallel light rays exit a concave lens,the light ray is?
    5·2 answers
  • What is 6.24x10^-4 in regular numbers
    12·1 answer
  • Is uranium a mixture or pure substance
    5·2 answers
  • Which balance is a centigram balance? <br> A <br> Or <br> B
    15·1 answer
  • How are thermal energy and mass related?
    5·2 answers
  • 1. Take a look at all the elements in period 3. What do you notice? *
    13·2 answers
  • During an experiment, a scientist places a heat lamp above a bowl of water and uses the lamp to heat up the water. How does heat
    6·2 answers
  • How many moles of nitrogen are in 1 mole of Al(NO3)3?
    7·1 answer
  • Each element is defined by the number of​
    13·2 answers
  • Fill in the blank with the correct response.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!