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Alik [6]
3 years ago
6

What can be added to water to make it evaporate occur faster (e.g. sand)

Chemistry
2 answers:
nalin [4]3 years ago
7 0

Add some heat. Yeah I think that'll work real nice.

tino4ka555 [31]3 years ago
4 0

is there any answer choices

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A room is a cube that measures 4 meters in each dimension. If the temperature changes from 10 C to 30 C, and the pressure decrea
Katen [24]

Answer:

More air will enter the room since the volume of the room increases.

Explanation:

We'll begin by calculating the initial volume (V₁) of the room. This can be obtained as follow

Length (L) of room = 4 m

Initial volume (V₁) =..?

V₁ = L³

V₁ = 4³

V₁ = 64 m³

Next, we shall determine if there is an increase in the volume of the room or not. This can be obtained as follow:

Data obtained from the question include:

Initial volume (V₁) = 64 m³

Initial temperature (T₁) = 10 °C + 273 = 283 K

Final temperature (T₂) = 30 °C + 373 = 303 K

Initial pressure (P₁) = 760 mmHg

Final pressure (P₂) = 718 mmHg

Final volume (V₂) =?

P₁V₁/T₁ = P₂V₂/T₂

760 × 64 / 283 = 718 × V₂ / 303

48640 / 283 = 718 × V₂ / 303

Cross multiply

283 × 718 × V₂ = 48640 × 303

203194 × V₂ = 14737920

Divide both side by 203194

V₂ = 14737920 / 203194

V₂ = 72.53 m³

SUMMARY

Initial volume (V₁) of room = 64 m³

Final volume (V₂) of room = 72.53 m³

From the calculations made above, we can see that the volume of the room increases from 64 m³ to 72.53 m³. Thus more air will enter the room since the volume of the room increases.

6 0
3 years ago
A teacher reacts 84.0 g of sodium bicarbonate with excess hydrochloric acid. What is the percent yield for sodium chloride if 56
Bond [772]

Answer:

b

Explanation:

5 0
3 years ago
How many grams are there in 1.70 moles of KMnO4?
topjm [15]

Answer:

269g

Explanation:

hope this helps you

8 0
3 years ago
Read 2 more answers
In the series of reactions that occur in photosynthesis, which forms when light strikes a molecule of chlorophyll?
True [87]

Answer:

NADPH

Explanation:

because it is in a dark stage

6 0
3 years ago
During the combustion of coal, the carbon in coal reacts with the oxygen in the atmosphere to form carbon dioxide. A, B, and C r
VikaD [51]
Answer: option <span>B.The total mass of A and C, which are carbon and oxygen, is equal to the mass of B, which is carbon dioxide.
</span>

Explanation:

1) The combustion of carbon is represented by the chemical equation:

C + O₂ → CO₂

2)  The law of conservation of mass states that the mass of the products is equal to the mass of the reactants.

3)  The reactants are C and O₂, while the product is CO₂.

4) The masses given are: A: 12 g, B: 44 g, and C: 32 g

Then, 12g + 32 g = 44 g, this is A + C = B.

Then, B represents the product, which is CO₂, whose molar mass is 44 g/mol.

Since, the molar mass of C is 12 g/mol, it is A; and since the molar mass of O₂ is 32, it is C.

Therefore, the answer is the option B.
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4 0
4 years ago
Read 2 more answers
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