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
xxTIMURxx [149]
3 years ago
6

Someone who occupies a key role in the design, construction, and management of chemical operations to insure and improve the qua

lity of life for people in and outside the plant is a(n) _____.
A chemical technician
B information chemist
C safety engineer
D environmental chemist
Chemistry
1 answer:
patriot [66]3 years ago
8 0

Answer:

D: environmental chemsit

Explanation:

I just read an article for my chemistry class, and took the quiz... hope this helps:)

You might be interested in
1. For CCl4, upload a photo including the following: (1) work arriving at total # valence electrons
forsale [732]

Work arriving at total valence electrons are 24

The valence electron is an electron in the outer shell associated with an atom, and that can participate in the formation of a chemical bond

For a main-group element, a valence electron can exist only in the outermost electron shell; for a transition metal, a valence electron can also be in an inner shell.

Lewis structures, also known as Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures (LEDS), are diagrams that show the bonding between atoms of a molecule, as well as the lone pairs of electrons that may exist in the molecule.

Calculating the work arrival at total valence electrons

We know 1 bond contains

2 valence electrons

Here CCl4 contains 4 bonds that is 8 valence electrons

Therefore ,

Total valence electrons are 32

Now valence electrons remain after bond formation =

32 - 8

=24 valence electrons

A molecular model is a physical model of an atomistic system that represents molecules and their processes

Molecular image and lewis hand drawn structure is as shown below

Learn more about lewis structure here

brainly.com/question/6224949

#SPJ10

3 0
2 years ago
How many atoms of N are in 137.0 grams of N2O3?
valina [46]

Answer:

1.085 x 10²⁴

Explanation:

The answer is not in your choices, but it maybe due to a typo but to get the answer to this, you just need to convert the grams to moles, then moles to atoms.

First we get the mass of the molecule for every mole. Get the atomic mass of each element and multiply it by the number of atoms present then get their total.

N₂O₃

Element       number of atoms        Atomic mass       TOTAL

    N                          2                x          14.007            28.014

    O                          3                x          15.999           <u>47.997</u>

                                                                                      76.011 g/mole

So now we know for every 1 mole of N₂O₃ there are 76.011 g of N₂O₃.

Next we need to see how many moles of N₂O₃ are there in 137.0g of N₂O₃.

137.0g\times\dfrac{1mole}{76.011g}=1.802moles

Now we know that we have 1.802moles of N₂O₃.

We use Avogadro's constant to find out how many atoms there are. Avogadro's constant states that for every mole of any substance, there are 6.022140857 × 10²³ atoms.

1.802moles\times\dfrac{6.022140857\times10^{23}atoms}{1 mole}=1.085\times10^{24}atoms

6 0
3 years ago
Read 2 more answers
Can u answer this?<br> Mass: 126 g<br> Volume: 15 cm to the third power<br> Density:?
Andre45 [30]

Answer:

Calculate density

Weight/mass

126

g

Volume

15

cm³

Density

8,400

kg/m³

Explanation:

4 0
3 years ago
Dose mitochondria make necessary chemicals for the cell
Bezzdna [24]
Yes mitochondria does make necrssary chemicals for the cell therefore the answer to your question is yes
5 0
3 years ago
Convert 0.54 km to dm
Kaylis [27]

.54 km to dm is 5,400 decimeters. Hope this helps, have a BLESSED day! :-)

6 0
3 years ago
Other questions:
  • New cells are created from A) matter. B) energy. C) other cells. D) non-living matter.
    8·2 answers
  • Please help me for 20 points<br> NUMBER 11 ONLY PLEASE <br> LOOK ON PHOTO FOR THE QUESTION, thanks!
    10·1 answer
  • You need to produce a buffer solution that has a ph of 5.16. you already have a solution that contains 10. mmol (millimoles) of
    10·1 answer
  • Given the chemical formulas of the following compounds, name each compound and state the rules you used to determine each name.
    11·1 answer
  • Use the following vocabulary words in a 3-5 paragraph sentence. Please highlight or bold the words as you use them in your parag
    12·1 answer
  • Poly(ethylene terephthalate) (PET), which has glass transition (Tg) and crystalline melting (Tm) temperature of 69 and 267 °C, r
    6·1 answer
  • State the method you will use to separate the following substances. (a) calcium carbonate from table salt (b) iodine from sodium
    11·2 answers
  • PLEASE HELP!!!!!!!!
    8·1 answer
  • Help Anyone! What would be the correct answer to this question?
    12·1 answer
  • 2. The volume of a rock is 5 cm' and its mass is 50 g. Find the density.<br> pls help :)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!