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VashaNatasha [74]
3 years ago
5

12. Which of the following is a combustion reaction?

Chemistry
1 answer:
DochEvi [55]3 years ago
5 0

Answer:

A. CH4 + 202

+ CO2 + 2H2O

Explanation:

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HELPPPPPPPPPP/AYUDAAAAAAAA
Anna [14]

Answer:

fghjkl

Explanation:

3 0
3 years ago
Electronegativities of the elements Na, Al, P, and Cl follow a specific trend across the period. Based on this trend, an electro
Vitek1552 [10]

Answer:

Electronegativity increases across the period on a periodic table.

Explanation:

Electronegativity is the ability of an atom to attract electron to itself.

All elements on the periodic table combines in order to have a complete octet i.e they all want to be like the noble gases, group 0 elements.

This is what drives most atom to combine chemically. By so doing, they either lose or gain electrons.

Cl belongs to the 7th group on the periodic table. It is the second element in this halogen group. Most halogens are notable for their high electronegativity. They have 7 electrons in their outermost shell and would require just an electron to complete their octet.

This makes them highly reactive and combine readily with other elements.

The halogens have a strong attraction for valence electrons. The higher the electronegativity value, the stronger the attraction an atom has for valence electrons.

Most metals like Al and Na are electropositive and readily donates or lose electrons so as to have a complete octet.

8 0
2 years ago
Read 2 more answers
The charge on an ion is known as its___number.
a_sh-v [17]

Answer:

oxidation number is correct!! :)

Explanation:

8 0
2 years ago
Which ecosystem is the most diverse ecosystem?
Mashcka [7]

Answer:

Rain forest

Explanation:

The rainforest has a very diverse animal kingdom

3 0
2 years ago
The freezing point of a substance is -20°C. Its boiling point is 120°C.
Tasya [4]

Answer:

a. liquid

b. solid

c. gas, (should be at it's boiling point)

Explanation: If the normal melting point of a substance is below room temperature, the substance is a liquid at room temperature. Benzene melts at 6°C and boils at 80°C; it is a liquid at room temperature. If both the normal melting point and the normal boiling point are above room temperature, the substance is a solid.

if you need an explanation to each lmk

8 0
3 years ago
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