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Bezzdna [24]
3 years ago
14

Picture below need done by 2:30 thanks, God bless your week

Chemistry
2 answers:
AURORKA [14]3 years ago
7 0

Answer:

1. <u>Evaporation</u> :- The changing of a liquid to a gas.

2. <u>Automobile</u> :- The major source of pollution.

3. <u>Greenhouse</u><u> effect</u> :- Carbon dioxide and water vapour trapping heat gives off by Earth.

4. <u>Ozonosphere</u> :- Layer absorbing ultraviolet rays.

5. <u>Condensation</u> :- The changing of gas to a liquid.

6. <u>Ionosphere</u> :- Layer responsible for reflecting radio waves.

7. <u>Tr</u><u>o</u><u>posphere</u> :- The layer in which weather changes.

Leviafan [203]3 years ago
5 0

1. \sf \bf {\boxed {\mathbb {Evaporation}}} - The changing of liquid to a gas.

2. \sf \bf {\boxed {\mathbb {Automobile}}} - The major source of pollution.

3. \sf \bf {\boxed {\mathbb {Greenhouse \:effect}}} - Carbon dioxide and water vapor trapping heat given off by Earth.

4. \sf \bf {\boxed {\mathbb {Ozonosphere}}} - Layer absorbing ultraviolet rays.

5. \sf \bf {\boxed {\mathbb {Condensation}}} - The changing of a gas to a liquid.

6. \sf \bf {\boxed {\mathbb {Ionosphere}}} - Layer responsible for reflecting radio waves.

7. \sf \bf {\boxed {\mathbb {Troposphere}}} - The layer in which weather changes.

\large\mathfrak{{\pmb{\underline{\orange{Mystique35 }}{\orange{❦}}}}}

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How to find the oxidation number of an element
Virty [35]
The thing you MUST do FIRST is look for any H's, O's, or F's in the equation

1)any element just by itself not in a compound, their oxidation number is 0
ex: H2's oxidation number is 0
ex: Ag: oxidation number is 0 if its just something like Ag + BLA = LALA

2) the oxidation number of H is always +1, unless its just by itself (see #1)
3) the oxidation number of O is always -2, unless its just by itself (see #1)
4) the oxidation number of F is always -1, unless its just by itself (see#1)


ok so after you have written those oxidation numbers in rules 1-4 over each H, F, or O atom in the compound, you can look at the elements that we havent talked about yet

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N2O4

the oxidation number of O is -2.

since there are 4 O's, the charge is -8. now remember that N2O4 has to be neutral so the N2 must have a charge of +8
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N has an oxidation number of +4.

more rules:
5) the sum of oxidation numbers in a compound add up to 0 (when multiplied by the subscripts!!!) (see above example)
6) the sum of oxidation numbers in a polyatomic ion is the charge (for example, PO4 has a charge of (-3) so

oxidation # of O = -2. (there are 4 O's = -8 charge on that side ) P must have an oxidation number of 5. (-8+5= -3), and -3 is the total charge of the polyatomic ion
3 0
4 years ago
g Alkenes and alkynes are called unsaturated compounds because ________. they have fewer hydrogen atoms attached to the carbon c
Firdavs [7]

Answer:

They have fewer hydrogen atoms attached to the carbon chain than alkanes

Explanation:

Let's compare ethane (an alkane) with ethene (an alkene) and ethyne (an alkyne):

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As you can see, alkenes and alkynes have fewer hydrogen atoms attached to the carbon chain due to them having multiple bonds between the carbon atoms.

7 0
3 years ago
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