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
Lina20 [59]
3 years ago
6

Why do the leaves outside change colors?

Chemistry
1 answer:
Allushta [10]3 years ago
7 0

Answer:

because the amount of pigments change as thee leaves prepare to fall from the trees

You might be interested in
When a force is applied to an object, its _____, the object _________________________________________________________.
Arada [10]
......................

7 0
3 years ago
What is the volume of ammonia produced at 243 K at a pressure of 1.38 atm by the unbalanced reaction on the left if 5740 moles o
Neporo4naja [7]

Answer:

49671 L is the produced volume of ammonia

Explanation:

We think the reaction of ammonia 's production:

N₂(g) + 3H₂(g)  → 2NH₃ (g)

We have the moles of each reactant so let's determine the limiting reactant:

Ratio is 1:3. 1 mol of nitrogen reacts with 3 moles of H₂

Then, 1720 moles of N₂ will react with (1720 .3) /1 = 5160 moles of H₂

We have 5740 moles of hydrogen, so we have enough hydrogen. This is the excess reagent, so the limiting is the N₂

1 mol of N₂ can produce 2 moles of ammonia

Therefore 1720 moles of N₂ will produce (1720 . 2) /1 = 3440 moles of NH₃

We apply now, the Ideal Gases Law → P . V = n . R .T

V = (n . R . T) /P → V = (3440 mol . 0.082 L.atm/mol.K . 243K) / 1.38 atm

V = 49671 L

We confirm that the nitrogen was the limiting reactant

3 moles of H₂ need 1 mol of nitrogen to react

Therefore, 5740 moles of H₂ will react with (5740 . 1) /3 = 1913 moles of N₂

It was ok to say, that N₂ was the limiting reactant because we need 1913 moles in the reaction, and we only have 1720 moles

6 0
3 years ago
What are some differences between Boiling & Evaporation?
Angelina_Jolie [31]
Boiling happens much faster! Boiling also takes place at the bottom of the fluid whereas evaporation takes place at the top.


Hope this helps!

3 0
3 years ago
Read 2 more answers
Explosive volcanic eruptions will hurl: hot cinders volcanic bombs lava pebbles large rocks all of the above
andreev551 [17]
The answer is all of the above
8 0
3 years ago
Read 2 more answers
At what temperature will a solid melt ?
r-ruslan [8.4K]

A solid will start to melt when it reaches its melting point. For example the melting point of Helium is -272° Celsius and the melting point of Carbon is 3500° Celsius . Helium has the lowest melting point and carbon has the highest melting point in the periodic table.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Is the following sentence true or false? the mass of an object changes with location.
    7·1 answer
  • 24 how many moles are in 2.04 × 1024 molecules of h2o?
    14·1 answer
  • What is the instantaneous rate of formation of product C given the following information: a. Stoichiometric equation A+ B2C+ D b
    7·1 answer
  • The complex ion Fe(CN)63- is paramagnetic with one unpaired electron. The complex ion Fe(SCN)63- has five unpaired electrons. Wh
    6·1 answer
  • For the following reactions, the ΔH° rxn is not equal to ΔH° f for the product except for ________.
    10·1 answer
  • One of the hopes for solving the world's energy problem is
    12·1 answer
  • Which protein transports water-insoluble lipids in the bloodstream?
    13·1 answer
  • Which of the following would not produce a sound?<br> some pls help me
    6·2 answers
  • Help, please I don't understand what I have to do
    6·1 answer
  • The measure of the bending of ray of light passing from one medium in another
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!