Answer:
100 kPa
Explanation:
This can be solved with one of the gases law. This law establishes that the pressure of the gas is directly proportional to its temperature: If we increase the temperature, the pressure will increase.
In this case, we decrease the temperature, so its pressure will be lower.
P₁ / T₁ = P₂ / T₂
We convert T° to Absolutes Values
27°C + 273 = 300 K
-173°C + 273 = 100 K
300 kPa / 300 K = P₂ / 100 K
(300 kPa / 300 K) . 100K = P₂
P₂ = 100 kPa
This is the Charles Gay Lussac's law.
A and b are related because if u look carefully at what its showing u that there both the same but what its telling u is not the same.
a and c are the same but the picture is different and also the way they describe it is different and what they want u to look at is that if you look at it closely then youll know the difference and how to find it as well
The Ammonia present in 2.5 mole of Ammonia is 42.5grams.
<h3>What is a mole ?</h3>
A mole is a measuring unit in Chemistry to measure the number of atoms in certain molar mass of a substance.
It is given that 2.5 mole of Ammonia is present
Grams of Ammonia present in 2.5 mole of Ammonia = ?
Molecular weight of Ammonia = 17 grams.
1 mole of Ammonia = 17 grams of Ammonia
2.5 mole of Ammonia = 17 * 2.5
= 42.5 grams
Therefore 42.5 grams of Ammonia is present in 2.5 mole of Ammonia.
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Answer:
Mass of hydrogen needed = 10 g
29.22 gram of sodium are required
Explanation:
1 )Given data:
Mass of oxygen = 80.0 g
Mass of hydrogen needed = ?
Solution:
Chemical equation:
2H₂ + O₂ → 2H₂O
Number of moles of oxygen:
Number of moles = mass/molar mass
Number of moles = 80 g/ 32 g/mol
Number of moles = 2.5 mol
now we will compare the moles of oxygen and hydrogen.
O₂ : H₂
1 : 2
2.5 : 2× 2.5 = 5 mol
Mass of hydrogen:
Mass = number of moles × molar mass
Mass = 5 mol × 2 g/mol
Mass = 10 g
2 : Given data:
initial mass ration of chlorine and sodium react with each other = 1.54 g : 1.0 g
Mass of sodium required for 45 g of chlorine = ?
Solution:
Cl₂ : Na
1.54 : 1.0
45 : 1.0/1.54× 45 = 29.22 g
Thus, 29.22 gram of sodium are required.