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Bezzdna [24]
2 years ago
14

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

Chemistry
2 answers:
AURORKA [14]2 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]2 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 many grams of a stock solution that is 92.5 percent H2SO4 by mass would be needed to make 250 grams of a 35.0 percent by mas
IrinaVladis [17]

94.6 g.  You must use 94.6 g of 92.5 % H_2SO_4 to make 250 g of 35.0 % H_2SO_4.

We can use a version of the <em>dilution formula</em>

<em>m</em>_1<em>C</em>_1 = <em>m</em>_2<em>C</em>_2

where

<em>m</em> represents the mass and

<em>C</em> represents the percent concentrations

We can rearrange the formula to get

<em>m</em>_2= <em>m</em>_1 × (<em>C</em>_1/<em>C</em>_2)

<em>m</em>_1 = 250 g; <em>C</em>_1 = 35.0 %

<em>m</em>_2 = ?; _____<em>C</em>_2 = 92.5 %

∴ <em>m</em>_2 = 250 g × (35.0 %/92.5 %) = 94.6 g

4 0
3 years ago
This is a Chemical bond where two atoms are sharing 1 or more electrons among the separate elements of a compound
Vinil7 [7]

Answer:

Covalent bond

4 0
3 years ago
Roughly how many times does Earth rotate during each complete revolution?
zalisa [80]
The Earth rotates 365 times during each complete revolution.

HOPE THIS HELPS! ^_^
6 0
3 years ago
Read 2 more answers
Please answer for me.
jeka94

Answer:

54.5%

Explanation:

The percentage composition of oxygen in C₆H₈O₆ can be obtained as follow:

Molar mass of C₆H₈O₆ = (12×6) + (8×1) + (16×6)

= 72 + 8 + 96

= 176 g/mol

Next, there are 6 oxygen atoms in C₆H₈O₆. Therefore the mass of oxygen in C₆H₈O₆ is:

Mass of Oxygen = 16 × 6 = 96 g

Finally, we shall determine the percentage composition of oxygen in C₆H₈O₆ as follow:

Percentage of oxygen =

Mass of Oxygen/mass of C₆H₈O₆ × 100

Percentage of oxygen = 96 / 176 × 100

Percentage of oxygen = 54.5%

Thus, the percentage composition of oxygen in C₆H₈O₆ is 54.5%.

4 0
3 years ago
How many total atoms are there in 74.5 g of carbon dioxide (CO2)? I am not sure if I did it correct I ended up getting 1.02 * 10
AlekseyPX
Molar mass CO₂ = 44.0 g/mol

44.0 g ----------------- 6.02x10²³ molecules
74.5 g ----------------- ??

74.5 x ( 6.02x10²³) / 44.0

= 1.019x10²⁴ molecules of CO2

Calculate the number <span>of atoms :

CO</span>₂<span> => 1 atom of Carbon  ,  2 atoms of Oxygen ( 1 + 2 = 3  atoms )

therefore:
</span>
1 molecule CO2 ---------------------- 3 atoms
1.019x10²⁴ CO2 --------------------- ?? atoms

3 x ( 1.019x10²⁴) / 1 = 

= 3.057x10²⁴ atoms of CO₂

hope this helps!

5 0
3 years ago
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