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dem82 [27]
3 years ago
8

What are the four symbols for physical states of reactants and products?

Chemistry
1 answer:
Studentka2010 [4]3 years ago
7 0
Solid -(s)
liquid - (l)
gas - (g)
aqueous - (aq)
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If 15.0 grams of ca combines completely with 12.0 grams of s to form a compound, what is the percent composition of s in the com
Oduvanchick [21]
<span>The percent composition of s in the compound is 44.4%.
</span>
No. of grams of ca = 15
no. of grams of S = 12
<span>percent composition of s in the compound = 12/(15 + 12) x 100
= 12/27 x 100
= 0.44 x 100
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If the pressure of a 2.00 L sample of gas is 50.0 kPa, what pressure does the gas exert if its volume is decreased to 20.0 mL?
dimulka [17.4K]

Answer:

P₂ = 5000 KPa

Explanation:

Given data:

Initial volume = 2.00 L

Initial pressure = 50.0 KPa

Final volume = 20.0 mL (20/1000=0.02 L)

Final pressure = ?

Solution:

The given problem will be solved through the Boly's law,

"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"

Mathematical expression:

P₁V₁ = P₂V₂

P₁ = Initial pressure

V₁ = initial volume

P₂ = final pressure

V₂ = final volume  

Now we will put the values in formula,

P₁V₁ = P₂V₂

50.0 KPa × 2.00L = P₂ × 0.02 L

P₂ = 100 KPa. L/0.02 L

P₂ = 5000 KPa

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2 years ago
14. What are the different types of river in Nepal ?explain them briefly ​
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Answer:

21

Explanation:

8 0
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