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
GuDViN [60]
3 years ago
13

Why is coal known as buried sunshine

Chemistry
1 answer:
Monica [59]3 years ago
8 0
Can u send a picture so I know wat ur talking about
You might be interested in
A student is performing an experiment that requires measuring the boiling point of water. The accepted
pochemuha

Answer:

.8°c my fingers jfjfjkfkrhrb

5 0
3 years ago
The rate of formation of C in the reaction 2 A + B →2 C + 3 D is 2.7 mol dm−3 s −1 . State the reaction rate, and the rates of f
Zielflug [23.3K]

Answer:

Rate of reaction =1.35mol.dm^{-3}.s^{-1}

Rate of consumption of A = 2.7mol.dm^{-3}.s^{-1}

Rate of consumption of B = 1.35mol.dm^{-3}.s^{-1}

Rate of formation of D = 4.15mol.dm^{-3}.s^{-1}

Explanation:

According to laws of mass action for the given reaction,

Rate= -\frac{1}{2}\frac{\Delta [A]}{\Delta t}=-\frac{\Delta [B]}{\Delta t}=\frac{1}{2}\frac{\Delta [C]}{\Delta t}=\frac{1}{3}\frac{\Delta [D]}{\Delta t}

where, -\frac{\Delta [A]}{\Delta t} is rate of consumption of A, -\frac{\Delta [B]}{\Delta t} is rate of consumption of B, \frac{\Delta [C]}{\Delta t} is rate of formation of C and \frac{\Delta [D]}{\Delta t} is rate of formation of D

Here \frac{\Delta [C]}{\Delta t}=2.7mol.dm^{-3}.s^{-1}

So, Rate of reaction = (\frac{1}{2}\times 2.7mol.dm^{-3}.s^{-1})=1.35mol.dm^{-3}.s^{-1}

Rate of formation of D = (\frac{3}{2}\times \frac{\Delta [C]}{\Delta t})=(\frac{3}{2}\times 2.7mol.dm^{-3}.s^{-1})=4.15mol.dm^{-3}.s^{-1}

Rate of consumption of A = (\frac{2}{2}\times \frac{\Delta [C]}{\Delta t})=(\frac{2}{2}\times 2.7mol.dm^{-3}.s^{-1})=2.7mol.dm^{-3}.s^{-1}

Rate of consumption of B = (\frac{1}{2}\times \frac{\Delta [C]}{\Delta t})=(\frac{1}{2}\times 2.7mol.dm^{-3}.s^{-1})=1.35mol.dm^{-3}.s^{-1}

3 0
3 years ago
What is the pH of a solution with [OH-]= (9.00x10^-4)? Enter your answer in scientific notation and with three signigicant figur
anygoal [31]

Hey there!:

Given [ OH⁻ ] = 9.00 x 10⁻⁴

We know that : [H⁺ ] [OH⁻ ] = 1 x 10⁻¹⁴

Thus [H⁺ ] =  ( 1 x 10⁻¹⁴ ) / ( 9.00 x 10⁻⁴ )

[ H⁺ ] = 1 x 10⁻¹¹ M

therefore:

pH = - log [ H⁺ ]

pH = - log [ 1 x 10⁻¹¹ ]

pH = 10.95

Therfore pH = 10.95

I hope this will help !

7 0
4 years ago
In which substance does clorine have an oxidation number of +5?​
Oksi-84 [34.3K]

Answer:oxidation number H = +1

oxidation number O = -2

let x = oxidation number Cl

in HClO3

+1 + x -6 =0

x = +5

Explanation:

3 0
4 years ago
1.
wolverine [178]
D) Hail. Hail is frozen rain
3 0
3 years ago
Other questions:
  • The Periodic Law states. "The physical and chemical properties of elements are periodic functions of their atomic
    15·1 answer
  • Suppose the fluid in the stomach of a man suffering from indigestion can be considered to be 200.ml of a 0.033 m hcl solution. w
    13·1 answer
  • If a cross-country runner covers a distance of 347 meters in 134 seconds what is her speed?
    11·1 answer
  • How many molecules of O2 are required to react with 3.00 moles P4?<br> P4+5O2⟶2P2O5
    13·2 answers
  • In the stable form of protein, what is generally oriented to the interior of the protein molecule? a. Random portions
    7·1 answer
  • I need help pls Where does it belong to?​
    11·1 answer
  • HELP PLEASE I BEG YOU
    14·2 answers
  • The following table shows the distance from the sun of some unknown planets of equal mass.
    7·2 answers
  • A car with a mass of 900 kg accelerates at 1.5 m/s2 what is the force acting on the car?
    11·1 answer
  • What is the kb of the base po−34 given that a 0. 48m solution of the base has a ph of 12. 70? the equation described by the kb v
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!