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Ostrovityanka [42]
3 years ago
13

Which type of molecule is shown below?

Chemistry
2 answers:
denis-greek [22]3 years ago
3 0
The answer is A. It is an alkyn. There is a triple bond
Vadim26 [7]3 years ago
3 0
Alkene I think not sure
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PLEASE HELP ANYONE IM TOO DUMB TO ANSWER THESE :(
AlladinOne [14]

Answer:

The "2" applies only to the sodium, and sugar is a substance

Explanation:

The amount of atoms in an element are written using small letters after the element they refer to.

3 0
3 years ago
When 10.0 g of sulfur is combined with 10.0 g of oxygen, 20.0 g of sulfur dioxide is formed. What mass of oxygen would be requir
Illusion [34]

Answer:

Actually, we can answer the problem even without the first statement. All we have to do is write the reaction for the production of sulfur trioxide.

2 S + 3 O₂ → 2 SO₃

The stoichiometric calculations is as follows:

6 g S * 1 mol/32.06 g S = 0.187 mol S

Moles O₂ needed = 0.187 mol S * 3 mol O₂/2 mol S = 0.2805 mol O₂

Since the molar mas of O₂ is 32 g/mol,

Mass of O₂ needed = 0.2805 mol O₂ * 32 g/mol = 8.976 g O₂

3 0
2 years ago
What does the picture depict about ecology?​
mezya [45]
There is no picture
5 0
2 years ago
Please do all of this I will give you 29 points thats all I have. I will mark brainliest if I figure out how too.
Romashka [77]

Answer:

1.  chemical property

2.  chemical property

3.  chemical change

4.  physical change

5.  physical property

6.  chemical change

7.  chemical change

8.  chemical property

9.  physical property

10.  physical property

11.  physical change

12.  chemical change

13.  chemical change

14.  chemical change

15.  true

16.  true

17.  false

18.  true

19.  false

20.  true

21.  chemical change

22.  physical change

23.  chemical change

24.  chemical change

Explanation:

Like it says in the worksheet, for questions 1-14, you can tell the difference between a property and change by whether there is a verb in the description.

If the object is simply changing form (melting, freezing), it is a physical change or property.  The object can be returned to the state it was in originally without much difficulty.  You can freeze water and turn it into ice.  You can just as easily melt the ice and turn it into water again.

If the object is actually changing its composition or a reaction is taking place (baking bread, combustion), it is a chemical change or property.  It is not as easy and sometimes even impossible to change back to its original state.  If you have a bike that is rusted, you cannot really do much to change it back to how it was before it got rusty.

Hope this helps! <3

8 0
2 years ago
A. what are the noble gases? b. what is a noble-gas configuration? c. how does noble-gas notation simplify writing an atom's ele
mamaluj [8]
A. Noble gases are the chemical elements in group 18 of the periodic table. 
B. Noble gas configuration is the electron configuration of noble gases. 
C. Noble gases abbreviates large portions of the configuration. 
5 0
2 years ago
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