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grigory [225]
2 years ago
5

Use the drop-down menus to determine the changes of state that are missing from the triangle.

Chemistry
1 answer:
aksik [14]2 years ago
8 0

Answer:

can you post a photo? to help y with the question

Explanation:

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Write the following elements in increasing order of atomic radius.<br> Ca, Mg, Be, Sr
Free_Kalibri [48]

Answer:

In increasing order:

Sr, Ca, Mg, Br

6 0
3 years ago
How to keep pipes from freezing during power outage?.
Maurinko [17]

Answer: <em>Running water, even at a trickle, helps prevent pipes from freezing. If you decide to use fuel-burning equipment, such as a kerosene heater, ensure it is vented to outside and kept clear of any vents. Keep garage doors closed if there are water supply lines in the garage.</em>

Explanation:

8 0
2 years ago
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5. How many atoms of hydrogen are in a molecule of acetic acid (HC2H202)?
Kazeer [188]

Answer:

in acetic acid ,there are 4 hydrogen atoms

Explanation:

C H 3 C O O H

3 0
3 years ago
Explain what would happen to the air temperature at Riverdale School over the course of the
monitta

Answer:

Air temperature increases.

Explanation:

The air temperature at Riverdale School increases if the groundwater system were used because this system uses very huge amount of water than the other system. By using more molecules having the same temperature, the thing with more molecules has more total kinetic energy or thermal energy than the thing with fewer molecules so that's why air temperature of the school is increases.

8 0
2 years ago
How many grams of methane gas (CH4) need to be combusted to produce 12.5 L water vapor at 301 K and 1.1 atm? Show all of the wor
tangare [24]
Answer is: 4.45 grams of methane gas <span>need to be combusted</span>.
Balanced chemical reaction: CH₄ + 2O₂ → CO₂ + 2H₂O.
Ideal gas law: p·V = n·R·T.<span>
p = 1.1 atm.
T = 301 K.
V(H</span>₂O) <span>= 12.5 L.
R = 0,08206 L·atm/mol·K.
</span>n(H₂O) = <span>1.1 atm · 12.5 L ÷ 0,08206 L·atm/mol·K · 301 K.
</span>n(H₂O) = 0.556 mol.
From chemical reaction: n(H₂O) : n(CH₄) = 2 : 1.
n(CH₄) = 0.556 mol ÷ 2 = 0.278 mol.
m(CH₄) = 0.278 mol · 16 g/mol.
m(CH₄) = 4.448 g.
4 0
3 years ago
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