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
lara31 [8.8K]
3 years ago
6

Do the following ! I'LL MARK THE BRAINLEST! ITS SCIENCE!

Chemistry
1 answer:
ipn [44]3 years ago
5 0

Answer:

it's easier to look it up

Explanation:

You might be interested in
A student ran the following reaction in the laboratory at 671 K: 2NH3(g) N2(g) + 3H2(g) When she introduced 7.33×10-2 moles of N
vaieri [72.5K]

Answer:

Kc = 8.05x10⁻³

Explanation:

This is the equilibrium:

                 2NH₃(g)   ⇄     N₂(g)     +     3H₂(g)

Initially       0.0733

React         0.0733α          α/2                3/2α

Eq     0.0733 - 0.0733α    α/2                0.103

We introduced 0.0733 moles of ammonia, initially. So in the reaction "α" amount react, as the ratio is 2:1, and 2:3, we can know the moles that formed products.

Now we were told that in equilibrum we have a [H₂] of 0.103, so this data can help us to calculate α.

3/2α = 0.103

α = 0.103 . 2/3 ⇒ 0.0686

So, concentration in equilibrium are

NH₃ = 0.0733 - 0.0733 . 0.0686 = 0.0682

N₂ = 0.0686/2 = 0.0343

So this moles, are in a volume of 1L, so they are molar concentrations.

Let's make Kc expression:

Kc= [N₂] . [H₂]³ / [NH₃]²

Kc = 0.0343 . 0.103³ / 0.0682² = 8.05x10⁻³

3 0
3 years ago
2) Calculate the mass(g) of the following substances:<br> b) 0.119 mole MgCl2
VARVARA [1.3K]

Answer:

MgCl2 = 24 + 2(35.5)

= 95

mass of substance = mol × molar mass

= 0.119 × 95

= 11.305 g

4 0
3 years ago
When do meanders form in a river? <br><br> A.young<br> B.old<br> C.mature<br> D.rejuvenated
Ira Lisetskai [31]

Answer:

The formation of a meander. As the river erodes laterally, to the right side then the left side, it forms large bends, and then horseshoe-like loops called meanders . The formation of meanders is due to both deposition and erosion and meanders gradually migrate downstream.

5 0
2 years ago
Which type of change is represented?
pentagon [3]
The correct answer is A. The image shows a nuclear fission. This takes place in any of the heavy nuclei after capture of a neutron. This is the opposite of nuclear fusion. In this case, nuclei are broken down into two.
4 0
3 years ago
What is the appearance of the signal corresponding to the CH₂ protons in the 1H NMR spectrum of ethyl methyl ether, CH₃CH₂OCH₃?
Tems11 [23]

Answer: option C. a quartet

Explanation:

7 0
3 years ago
Other questions:
  • The phase change from liquid water to water vapor involves more energy than the phase change from water vapor to liquid water. s
    7·1 answer
  • Help please for chemistry class
    14·1 answer
  • Which terms identify types of chemical reactions
    8·1 answer
  • The following chemical reaction occurs in a basic solution.
    6·1 answer
  • Will you guy's help me in science please
    13·2 answers
  • How are scented candles made?
    8·2 answers
  • Which of the following is an example of a chemical change?
    10·1 answer
  • Is it true or false?
    14·1 answer
  • Identify the element symbol<br> 1s22s22p63s23p64s23d104p65s24d5
    7·1 answer
  • What is observed when magnesium is reacted with hydrochloric acid? choose all that apply
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!