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
MAXImum [283]
3 years ago
7

What is ""green chemistry""? Describe how the distillation procedure used in this lab is a more ""green"" approach than liquid-l

iquid extraction with organic solvents. 3. Why should the distillation apparatus have an opening to the atmosphere at
Chemistry
1 answer:
pshichka [43]3 years ago
5 0

Answer: Green chemistry, can also be referred to as a major branch of Chemical Engineering that focuses on the nature plants for the use of new products and reduce wastage of resources.

Explanation:

The distillation apparatus used is open to the atmosphere to allow for removal of poisonous gas and absorption of some composition in the space for proper result.

You might be interested in
Help please Thank You so much!
Irina18 [472]
If you count the number of electrons (small dots), you have the atomic number. In this case you have 11 so this atom is a sodium atom. Sodium has 1 valence electron (electron on the outer shell) and chlorine has 7. This means that if sodium gave one electron away and chlorine would obtain one electron, they would both have the (ideal) noble gas conformation (full outer shell).
4 0
3 years ago
How does the displacement moved affect the amount of work done?
Sholpan [36]

The displacement affect the amount of work done by the fact that more displacement implies more work.

Option B

<u>Explanation:</u>

Work can be defined as the "measure of energy transfer" that occurs when an object is moved over a distance by an external force which is applied in the "direction of the displacement".

Work can be formulated as,

W = (F \times s)\  N / m \\ \\Work = ( Force \times Displacement )\   Newton/meter

From the above-mentioned formula, we can infer that Work is directly proportional to the displacement of the object.Therefore, more the work is more will be its displacement.

6 0
3 years ago
What is the empirical formula of a compound that is composed of 60.94% carbon 15.36% hydrogen and 23.70% nitrogen
Musya8 [376]

Answer:

C₃H₉N

Explanation:

The empirical formula of a compound is the fundamental and basic possible formula that shows the mole ratio of the atoms of each element in a molecule of the compound.

mole ratio of carbon = 60.94/12 = 5.078

mole ratio of hydrogen = 15.36/1  = 15.36

mole ratio of nitrogen = 23.70/14 = 1.693

Now; we will divide by the smallest value

So; carbon = 5.078/1.693 = 2.99 ≅ 3.0

hydrogen = 15.36/1.693 = 9.07 ≅ 9.0

nitrogen = 1.693/1.693 = 1 ≅ 1

Thus,  the empirical formula is = C₃H₉N

6 0
3 years ago
During a combustion reaction, 9.00 grams of oxygen reacted with 3.00 grams of CH4.
Monica [59]

Answer:

0.74 grams of methane

Explanation:

The balanced equation of the combustion reaction of methane with oxygen is:

  • CH₄ + 2 O₂ → CO₂ + 2 H₂O

it is clear that 1 mol of CH₄ reacts with 2 mol of O₂.

firstly, we need to calculate the number of moles of both

for CH₄:

number of moles = mass / molar mass = (3.00 g) /  (16.00 g/mol) = 0.1875 mol.

for O₂:

number of moles = mass / molar mass = (9.00 g) /  (32.00 g/mol) = 0.2812 mol.

  • it is clear that O₂ is the limiting reactant and methane will leftover.

using cross multiplication

1 mol of  CH₄ needs → 2 mol of O₂

???  mol of  CH₄  needs → 0.2812 mol of O₂

∴ the number of mol of CH₄ needed = (0.2812 * 1) / 2 = 0.1406 mol

so 0.14 mol will react and the remaining CH₄

mol of CH₄ left over = 0.1875 -0.1406 = 0.0469 mol

now we convert moles into grams

mass of CH₄ left over = no. of mol of CH₄ left over *  molar mass

                                    = 0.0469 mol * 16 g/mol = 0.7504 g

So, the right choice is 0.74 grams of methane

3 0
3 years ago
A topographical map of a section of Charleston, SC is shown. What feature is located at the dot marked with an X? A) the center
Effectus [21]
It seems that you have missed the given image to answer this question. But anyway, I found it and got the answer. Based on the  topographical map of a section of Charleston, SC, the feature that is <span>located at the dot marked with an X is the high point of a hill. The answer would be option D.</span>
6 0
3 years ago
Other questions:
  • According to the first law of thermodynamics, the amount of work done by a heat engine equals the amount of
    11·2 answers
  • Ethanol is used widely as a solvent in laboratories for various chemical reactions. A laboratory technician takes 50.0 mL of eth
    15·2 answers
  • Infer: Is the reaction below possible? Explain why or why not. H2O + NaOH NaCl + H2
    7·1 answer
  • In a cell, what is the function of the Cell Membrane?
    10·1 answer
  • What is the effect on vapor pressure of a solution with particularly strong solute-solvent interactions? With particularly weak
    8·1 answer
  • The amount of material left after two half-lives is one-half of the original amount. ____________________
    12·2 answers
  • A chemist adds of a iron(III) bromide solution to a reaction flask. Calculate the mass in kilograms of iron(III) bromide the che
    6·1 answer
  • If you quickly plunge a room-temperature mercury thermometer into very hot water, what will happen to the mercury level?\
    5·1 answer
  • Red blood cells are constantly being produced in your body. Another body system cooperates with the cardiovascular system in the
    12·1 answer
  • PART A: Which of the following identifies the central idea of the text? The text is the power of advertising
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!