Answer:
1.40 atm
Explanation:
To answer this question we can use<em> Gay-Lussac's law</em>, which states:
When volume and number of moles remain constant.
- T₁ = 23°C ⇒ 23+273.16 = 296.16 K
- T₂ = Boiling point of water = 100 °C ⇒ 100+273.16 = 373.16 K
We <u>put the known data in the equation and solve for P₂</u>:
- 1.11 atm * 373.16 K = P₂ * 296.16 K
<h3>1. <u>Answer;</u></h3>
Percentage yield = 65.9%
<h3><u>Explanation;</u></h3>
- Percentage yield of a reaction is obtained by dividing the actual yield by theoretical yield and multiplying by 100 percent.
Therefore;
- Percentage yield = Actual yield/theoretical yield × 100%
= (1.20 g/1.82 g) × 100%
= 65.9%
<h3 /><h3>2. <u>Answer;</u></h3>
The amount of measured yield over calculated yield
<h3>Explanation;</h3>
- Percentage yield of a reaction is obtained by dividing the actual yield by theoretical yield and multiplying by 100 percent.
- The actual yield is the actual amount produced when the experiment or reaction is carried out.
- Theoretical yield is the calculated or expected amount of the product. It is based on the limiting reactant.
<h3>3. <u>Answer</u>;</h3>
= 37.71 g
<h3><u>Explanation;</u></h3>
The balanced equation is:
2 Na + Cl₂ → 2 NaCl.
From the balanced equation:
2.0 moles of Na reacts with 1.0 mole of chlorine gas to give 2.0 moles of NaCl.
- The number of moles of Na = mass/atomic mass),
n = (17.25 g / 22.989 g/mole of Na)
= 0.75 moles
Thus;
- Using cross multiplication and from the equation:
2.0 moles of Na → 2.0 moles of NaCl
0.75 moles of Na → 0.75 moles of NaCl
Therefore;
- The mass of the produced NaCl (m = n x molar mass)
m = (0.75 mole x 58.443 g/mole of NaCl)
= 43.85 g.
- This is the yield if the percentage of yield is 100%, but the percentage yield of the reaction is 86%.
Hence;
The actual yield = (43.85 g) (86/100)
= 37.71 g.
<h3>4. <u>Answer;</u></h3>
Oxygen and hydrogen molecules will mix because of random movement of their molecules.
<h3><u>Explanation;</u></h3>
- Both gasses will diffuse into the other jar until the molecules are well distributed into both containers.
- Diffusion is the movement of molecules from a point of high concentration to areas of low concentration until equilibrium is attained.
- The mixture of gases will have a partial pressure that is equal to the sum of the partial pressures of the component gases.
There are four Earth's spheres: the geosphere, hydrosphere, biosphere and atmosphere.
The spheres interact with one other. For example, plants (biosphere) produce oxygen (atmosphere) from carbon dioxide (atmosphere).
Substances in different spheres are recycled and turned into other phases and forms. This is important cycle and without that, there is no life on Earth.
Answer:
C.
Explanation:
A. C - 6 electrons - 1s2 2s2 2p2
B. O - 8 electrons - 1s2 2s2 2p4
C. N - 7 electrons - 1s2 2s2 2p3
D. Be - 4 electrons - 1s2 2s2
Answer:
Radiant, chemical
Explanation:
it turns the radiant energy from the sun into chemical sorry if I am wrong but I am vary sure I am right
