Answer:
Halogens
Explanation:
The elements of 17th group of modern periodic table is known as halogens . The word halogen means salt former and compound which contains halogens are called salt.
Diffusion<span> is defined as spreading of molecules of a substance, away from each other, throughout the space.
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Effusion is the phenomena of escape of gas molecules through a very small orifice into an evacuated area.
According to Graham's Law, rate of diffusion and effusion is inversely proportional to molecular mass.
Thus, with increase in molecular mass, rate of diffusion and effusion will decrease.
A cation is a positive charged ion and a anion is a negatively charged ion. An electron will make a cation if it is lost and a anion if it is gained.
The etymology of the prefix cat- means the way down: so think of the sun setting down and losing light. Cat = losing electrons (Such as in a CAThode ray).
The etymology of the prefix -an means upwards. So think of the sun rising up and becoming brighter. An = gaining electrons and becoming overall more negative as electrons are negatively charged.
Answer:
619.2 °C
Explanation:
Given data:
Initial volume of gas = 736 mL
Initial temperature = 15°C
Final volume = 2.28 L
Final temperature = ?
Solution:
First of all we will convert the temperature into kelvin and mL into L.
Initial temperature = 15°C (15+273 = 288 k)
Initial volume of gas = 736 mL × 1 L/1000 mL = 0.736 L
The given problem will be solve through the Charles Law.
According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.
Mathematical expression:
V₁/T₁ = V₂/T₂
V₁ = Initial volume
T₁ = Initial temperature
V₂ = Final volume
T₂ = Final temperature
Now we will put the values in formula.
V₁/T₁ = V₂/T₂
0.736 L / 288 k = 2.28 L / T₂
T₂ = 2.28 L× 288 k/0.736 L
T₂ = 656.64 K /0.736
T₂ = 892.2 K
Kelvin to °C:
892.2 K - 273.15 = 619.2 °C
Reducing the concentration of reactants