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solong [7]
2 years ago
15

Help me pleaseeeeee​

Chemistry
1 answer:
katrin [286]2 years ago
5 0

Answer:

Arthropod (3)

Annelids (2)

Cnidarians (1)

Echinoderms (4)

Explanations:

I hope all this helps if u don't understand it let me know.

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How many outer rings does iodine have
Daniel [21]
53 if your talking about electrons. 74 if your talking about neutrons. energy levels=5 Hope this helps☺️
3 0
3 years ago
How many moles of carbon dioxide are produced when 5.12 mol of propane gas is burned in excess oxygen? C3H8(g) + 5O2(g) → 3CO2(g
maxonik [38]

Answer:

15.4 mol CO₂

Explanation:

5.12 mol C₃H₈ × (3 mol CO₂ / mol C₃H₈) ≈ 15.4 mol CO₂

4 0
2 years ago
Read 2 more answers
12g of carbon react with 32g of oxygen to produce 44g of CO2 .which chemical law do the data illustrate​
Julli [10]

Answer:

Law of constant composition

6 0
3 years ago
Read 2 more answers
If you found carbon 13 atom, you would know that
bearhunter [10]
The Options are as follow,

<span>a. it has 13 protons                  c. it has 13 neutrons                      </span>

<span>b. it has 13 electrons               d. it has 7 neutrons</span>


Answer:

             Option-d is the correct answer.


Explanation:

             As we know that C-13 has a atomic mass of 13. Also, atomic mass is given as,


<span>                 Atomic Mass  =  # of Protons  +  # of Neutrons   --- (1)</span>


Since;

          Atomic Mass  =  13

And,

          # of protons  =  6 (as number of protons  =  atomic number)


Putting values in equation 1,


                               13  =  6  -  # of Neutrons


Solving for Number of Neutrons,


                               # of Neutrons  =  13  -  6


                               # of Neutrons  =  7

3 0
3 years ago
Student A is pulling 57 newtons and student B is pushing at 96 newtons. What is the net force?
Elis [28]

Answer:

153 N left

Hope this helps

Explanation:

8 0
2 years ago
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